Kangaroo: A jumping animal from Australia. The kangaroo carried its baby in a pouch.

Koala: A tree-climbing animal from Australia. The koala slept in the tree.

Kiwi: A small bird from New Zealand. The kiwi walked quietly at night.

Kettle: A pot used to boil water. The kettle whistled on the stove.

Key: A tool used to open a lock. She used the key to open the door.

Keyboard: A board with keys for typing. He typed a message on the keyboard.

Keyhole: A small hole for a key in a lock. The key fit in the keyhole.

Keyring: A ring that holds several keys. His keys were on a keyring.

Keychain: A small chain used to hold keys. The keychain had a star charm.

Keypad: A set of numbered buttons. She entered the code on the keypad.

Ketchup: A red tomato sauce. He ate fries with ketchup.

Kernel: The inside part of a seed or nut. The corn kernel popped.

Kiosk: A small shop or booth. She bought a drink at the kiosk.

Kilogram: A unit used to measure weight. The bag weighs one kilogram.

Kilometer: A unit used to measure distance. The school is two kilometers away.

Kiln: A hot oven used for baking clay. The potter used a kiln.

Kilt: A skirt worn in Scotland. The man wore a colorful kilt.

King: A man who rules a kingdom. The king sat on the throne.

Kingdom: Land ruled by a king or queen. The kingdom was peaceful.

Kind: Being nice and caring. The teacher is kind to students.

Kindness: The act of being helpful. Her kindness helped a lost puppy.

Kindhearted: Having a caring nature. The kindhearted boy shared his lunch.

Kindly: In a gentle and helpful way. She kindly helped the new student.

Kindred: People from the same family. They welcomed their kindred warmly.

Kin: Family members. She visited her kin during the holiday.

Kinsman: A male family relative. His kinsman came to visit.

Kinswoman: A female family relative. Her kinswoman brought gifts.

Kick: To strike with the foot. The boy kicked the soccer ball.

Kickball: A game played by kicking a ball. The class played kickball outside.

Kickstand: A support that holds a bicycle upright. He lowered the kickstand.

Kid: A young child. The kid laughed loudly.

Kiddo: A friendly word for a child. Come here, kiddo.

Kidnap: To take someone away by force. The story warned about kidnap dangers.

Kidney: An organ that cleans the blood. Healthy kidneys are important.

Kidney bean: A red bean used in cooking. The soup had kidney beans.

Kidnapper: A person who kidnaps someone. The police caught the kidnapper.

Kidwear: Clothes made for children. The shop sells colorful kidwear.

Knead: To press dough with hands. She kneaded the bread dough.

Kneel: To go down on the knees. The boy knelt to tie his shoe.

Knee: The joint in the middle of the leg. He scraped his knee.

Kneecap: The round bone at the front of the knee. The kneecap protects the knee.

Kneepad: A pad worn to protect the knee. The skater wore kneepads.

Knife: A sharp tool used for cutting. She sliced fruit with a knife.

Knifepoint: The sharp tip of a knife. The bread was cut at the knifepoint.

Knit: To make cloth using yarn and needles. She knit a warm scarf.

Knitting: The craft of making fabric with yarn. Knitting is relaxing.

Knitter: A person who knits. The knitter made a sweater.

Knob: A round handle on a door. He turned the knob slowly.

Knock: To tap a door to get attention. She heard a knock.

Knockout: A strong hit that ends a game. The boxer won by knockout.

Knot: A twist in rope or string. He tied a knot in the rope.

Knotted: Tied into knots. The rope was knotted tightly.

Knuckle: The joint of a finger. He cracked his knuckles.

Knapsack: A bag carried on the back. The traveler packed a knapsack.

Knowledge: Information learned by study. Reading gives knowledge.

Knowledgeable: Having a lot of knowledge. The guide was knowledgeable.

Known: Recognized by people. The town is known for apples.

Knowing: Showing understanding. She gave a knowing smile.

Knoll: A small rounded hill. They sat on a grassy knoll.

Koala bear: A tree-climbing animal from Australia. The koala bear ate leaves.

Kob: A type of antelope. The kob ran across the field.

Koi: A colorful fish. The koi swam in the pond.

Kombu: A type of seaweed. Kombu is used in soup.

Kohl: A black powder used for eye makeup. She applied kohl carefully.

Kola: A nut used in drinks. The cola drink contains kola flavor.

Kookaburra: A bird from Australia with a loud call. The kookaburra laughed loudly.

Kopek: A small Russian coin. He found a kopek in the drawer.

Krill: Tiny sea animals eaten by whales. The whale ate krill.

Krypton: A chemical element gas. Krypton is used in special lamps.

Kale: A leafy green vegetable. Kale is healthy to eat.

Kebab: Pieces of meat cooked on a stick. They grilled kebabs.

Kayak: A small narrow boat. He paddled the kayak.

Kayaker: A person who rides a kayak. The kayaker crossed the lake.

Kayaking: The sport of using a kayak. Kayaking is fun on rivers.

Karate: A sport of self-defense. She learns karate.

Karateka: A person who practices karate. The karateka bowed respectfully.

Karat: A measure of gold purity. The ring is twenty-four karat gold.

Karma: The idea that actions bring results. Good karma comes from good deeds.

Karst: Land shaped by dissolving rocks. The cave formed in karst land.

Katydid: A green insect that chirps at night. The katydid sang in the tree.

Kazoo: A musical toy instrument. He hummed into the kazoo.

Kebab stand: A small shop selling kebabs. They stopped at the kebab stand.

Kefir: A fermented milk drink. Kefir tastes sour.

Kelp: A large seaweed plant. Fish hide in kelp forests.

Kermis: A small outdoor fair. The town held a kermis.

Kernel corn: Corn grains on a cob. The kernel corn was sweet.

Kestrel: A small hunting bird. The kestrel hovered in the sky.

Ketch: A two-masted sailing boat. The ketch sailed across the bay.

Kettle drum: A large drum used in music. The kettle drum boomed loudly.

Keynote: The main speech at an event. The keynote inspired the crowd.

Keystone: The most important part of something. Trust is the keystone of friendship.

Khaki: A light brown color. He wore khaki pants.

Khan: A title used by some rulers. The khan ruled the land.

Kickoff: The start of a game. The kickoff began the match.

Kidnaping: The act of taking someone away by force. The story described a kidnaping.

Kidder: A person who jokes a lot. He is a friendly kidder.

Kidlet: A small child. The kidlet waved happily.

Kiddy: A word meaning small child. The kiddy played with toys.

Kidstuff: Things meant for children. The shelf held kidstuff.

Kidtime: Time for children to play. After lunch was kidtime.

Kilderkin: A small barrel. The farmer filled the kilderkin.

Kill: To cause something to die. The poison can kill weeds.

Killer: A person or thing that kills. The storm was a crop killer.

Killing: The act of causing death. The story warned about animal killing.

Kilnman: A worker who manages a kiln. The kilnman checked the heat.

Kilnwork: Work done in a kiln. The pottery showed careful kilnwork.

Kiltmaker: A person who makes kilts. The kiltmaker stitched fabric.

Kimono: A traditional Japanese robe. She wore a silk kimono.

Kinfolk: Family members. His kinfolk gathered together.

Kine: An old word for cows. The kine grazed in the field.

Kindnesses: Many acts of kindness. The children shared kindnesses.

Kingbird: A bird that catches insects. A kingbird perched nearby.

Kingcup: A bright yellow flower. Kingcups grew in the meadow.

Kingfisher: A bird that catches fish. The kingfisher dived quickly.

Kinglet: A tiny bird. The kinglet chirped softly.

Kingship: The state of being a king. The story told of kingship.

Kingsize: Very large in size. He ordered a kingsize bed.

Kink: A twist or curl. Her hair had a kink.

Kinky: Full of twists or curls. The rope looked kinky.

Kinsfolk: Another word for relatives. Her kinsfolk arrived early.

Kipper: A smoked fish. They ate kippers for breakfast.

Kir: A drink made with juice and wine. The café served kir.

Kiss: A gentle touch with the lips. The mother gave a kiss.

Kisser: A playful word for lips. The baby puckered his kisser.

Kit: A set of tools in one box. The doctor carried a kit.

Kitchen: A room for cooking. She cooked dinner in the kitchen.

Kite: A toy that flies in the wind. The girl flew a kite.

Kitten: A baby cat. The kitten chased a ball.

Kitty: A friendly name for a cat. The kitty slept on the rug.

Kiwi fruit: A small brown fruit with green inside. The kiwi fruit tasted sweet.

Klaxon: A loud warning horn. The ship sounded its klaxon.

Kleenex: A soft paper tissue. He used a Kleenex to wipe his nose.

Kleptomania: A strong urge to steal things. The doctor explained kleptomania.

Klick: A short word for kilometer. The camp was one klick away.

Klondike: A region known for gold. Many people went to Klondike.

Knack: A special skill. She has a knack for drawing.

Knacker: A person who handles old animals. The knacker worked on the farm.

Knackered: Very tired. After running, he felt knackered.

Knapsack sack: A backpack bag. He packed books in the knapsack sack.

Knave: A dishonest man in stories. The knave tricked the hero.

Knavery: Dishonest behavior. The story warned against knavery.

Kneehole: The space for knees under a desk. The kneehole was wide.

Kneeler: A cushion for kneeling. The kneeler was soft.

Kneeling: The act of resting on knees. He was kneeling in prayer.

Knell: The sound of a bell for death. The church bell rang a knell.

Knelt: Past tense of kneel. She knelt beside the bed.

Knife edge: The sharp edge of a knife. The bread touched the knife edge.

Knight: A brave soldier in armor. The knight rode a horse.

Knighthood: The title of being a knight. The king gave him knighthood.

Knightly: Brave and noble like a knight. His knightly act saved the village.

Knightship: The rank of a knight. The hero earned knightship.

Knitwear: Clothes made by knitting. The shop sells knitwear.

Knobbed: Having round knobs. The stick was knobbed.

Knobby: Full of small knobs. The road was knobby with stones.

Knockdown: Something pushed to the ground. The boxer scored a knockdown.

Knocker: A metal piece used to knock on doors. The door had a lion knocker.

Knockout blow: A hit that ends a fight. The knockout blow was strong.

Knockabout: Rough playful behavior. The boys enjoyed knockabout games.

Knockoff: A copy of something. The toy was a cheap knockoff.

Knockside: The side hit by something. The knockside of the door bent.

Knolltop: The top of a small hill. They stood on the knolltop.

Knotty: Full of knots. The rope was knotty.

Knotwork: Patterns made with knots. The art showed knotwork.

Knotweed: A fast-growing plant. Knotweed spread in the garden.

Knotless: Without knots. The thread was knotless.

Knotmaker: A person skilled in tying knots. The sailor was a knotmaker.

Knotline: A rope used to measure speed at sea. The sailor used a knotline.

Knotting: The act of tying knots. Knotting rope takes practice.

Knotband: A band tied with knots. The knotband held the package.

Knotstring: A string with knots. The knotstring marked the length.

Knout: A type of whip used long ago. The story mentioned a knout.

Know: To understand something. I know the answer.

Knowingness: Showing understanding. She smiled with knowingness.

Knowhow: Skill in doing something. He has the knowhow to fix bikes.

Knowable: Able to be understood. The problem was knowable.

Knower: A person who knows something. The wise knower gave advice.

Knowing look: A look that shows understanding. She gave a knowing look.

Knowledgebase: A place where information is stored. The website had a knowledgebase.

Knowledgebook: A book full of information. The library had a knowledgebook.

Knowledgepath: A way of learning. Reading is a knowledgepath.

Known fact: A fact many people accept. It is a known fact that water boils.

Knuckleball: A baseball thrown without spin. The pitcher threw a knuckleball.

Knucklebone: A small bone joint. The dog chewed a knucklebone.

Knuckleduster: A metal guard for the hand. The police removed the knuckleduster.

Knuckly: Having many knuckles. The old hand looked knuckly.

Knurl: A rough pattern on metal. The handle had a knurl.

Knurled: Having a rough grip pattern. The tool had a knurled handle.

Knurling: The process of making rough patterns. The machine did knurling.

Knurly: Rough and knotted in shape. The tree trunk was knurly.

Knoutman: A person who used a knout long ago. The story mentioned a knoutman.

Kook: A silly or strange person. The character acted like a kook.

Kooky: Silly in a funny way. The clown wore kooky clothes.

Kraal: A fenced area for animals in Africa. The cattle stayed in the kraal.

Kraken: A giant sea monster in legends. Sailors feared the kraken.

Krater: A bowl used in ancient Greece. The krater held wine.

Krone: A type of money used in some countries. He paid ten krone.

Kroner: The plural of krone. The toy cost twenty kroner.

Krypton: A gas element used in lamps. The bulb contained krypton.

Kryptonite: A fictional mineral that weakens Superman. The villain used kryptonite.

Kudu: A large African antelope. The kudu ran through the grass.

Kabob: Pieces of meat or vegetables cooked on a stick. We grilled a kabob for dinner.

Kabuki: A traditional Japanese theater style. The actors performed kabuki on stage.

Kaffir: A citrus fruit with strong leaves used in cooking. The soup used kaffir leaves.

Kaiser: A German emperor. The kaiser ruled the country long ago.

Kalimba: A small African musical instrument with metal keys. She played a song on the kalimba.

Kaleidoscope: A tube toy that shows colorful patterns. The child looked through the kaleidoscope.

Kalmia: A flowering plant. The kalmia bloomed in spring.

Kangaroo: A jumping animal from Australia. The kangaroo hopped across the field.

Kangaroo rat: A small desert rodent. The kangaroo rat jumped over the sand.

Kaolin: A soft white clay used in pottery. The artist shaped kaolin into a bowl.

Kapok: A soft plant fiber used for stuffing pillows. The pillow was filled with kapok.

Karakul: A breed of sheep with curly wool. The farmer raised karakul sheep.

Karat: A measure of gold purity. The ring is made of twenty-four karat gold.

Karate: A sport that teaches self-defense. She practices karate every week.

Karma: The idea that actions bring results. Good actions bring good karma.

Kart: A small racing vehicle. The boy drove a kart on the track.

Karting: The sport of racing karts. Karting is exciting to watch.

Karyotype: The number and appearance of chromosomes in a cell. Scientists studied the karyotype.

Kashmiri: A person or item from Kashmir. The shop sold Kashmiri shawls.

Kauri: A large tree from New Zealand. The kauri tree grows very tall.

Kava: A drink made from plant roots. People shared kava at the gathering.

Kay: A small sandy island. The boat stopped at the quiet kay.

Kayak: A narrow boat moved with a paddle. She paddled the kayak across the lake.

Kayaker: A person who rides a kayak. The kayaker wore a safety helmet.

Kayaking: The activity of riding a kayak. Kayaking is fun on rivers.

Kea: A clever mountain parrot. The kea opened the backpack.

Keel: The bottom support of a boat. The keel keeps the boat balanced.

Keelboat: A boat with a strong keel. The keelboat sailed slowly.

Keen: Very eager or interested. She is keen to learn science.

Keep: A strong tower inside a castle. The king stayed in the keep.

Keg: A small barrel for storing drinks. The juice was kept in a keg.

Kelp: A large sea plant. Fish hide in the kelp.

Kelp forest: A group of kelp plants underwater. Sea animals lived in the kelp forest.

Kempt: Neat and tidy. The garden looked well kempt.

Ken: Knowledge or understanding. The idea was beyond his ken.

Kennel: A small house for a dog. The puppy slept in the kennel.

Kennel club: A group that cares about dogs. The kennel club held a show.

Kenning: A poetic phrase describing something. “Sky candle” is a kenning for the sun.

Keno: A game using numbers. People played keno at the fair.

Kepi: A flat cap worn by soldiers. The guard wore a kepi.

Keratin: A protein in hair and nails. Hair is made of keratin.

Kerchief: A small cloth worn on the head or neck. She tied a kerchief.

Kerf: A cut made by a saw. The kerf in the wood was straight.

Kerfuffle: A noisy disagreement. The small mistake caused a kerfuffle.

Kermis: A small outdoor festival. The town held a kermis in summer.

Kermode bear: A rare white bear found in Canada. The kermode bear walked through the forest.

Kerosene: A fuel used in lamps. The lamp burned kerosene.

Kerosene lamp: A lamp that uses kerosene. The kerosene lamp lit the room.

Kestrel: A small bird of prey. The kestrel hovered in the sky.

Ketch: A type of sailing boat with two masts. The ketch sailed across the bay.

Kettledrum: A large round drum used in music. The kettledrum sounded loudly.

Kettlecorn: Sweet and salty popcorn. We ate kettlecorn at the fair.

Keycard: A plastic card used to open doors. The hotel gave us a keycard.

Keynote: The main speech at an event. The teacher gave the keynote.

Keystone: The most important part of something. Trust is the keystone of friendship.

Khaki: A light brown color. He wore khaki pants.

Khan: A title for a ruler in some Asian countries. The khan led the tribe.

Khamsin: A hot desert wind. The khamsin blew across the sand.

Khimar: A long head covering worn by some women. She wore a khimar.

Kibble: Small dry food for pets. The dog ate kibble.

Kickboard: A board used in swimming practice. She held the kickboard.

Kickoff: The start of a sports game. The kickoff began the match.

Kidder: A person who likes to joke. He is a cheerful kidder.

Kiddie: A small child. The kiddie laughed loudly.

Kiddie pool: A small shallow pool for children. The baby splashed in the kiddie pool.

Kilderkin: A small wooden barrel. The farmer stored juice in a kilderkin.

Kilnworker: A person who works with a kiln. The kilnworker checked the heat.

Kilnman: A person who operates a kiln. The kilnman baked pottery.

Kilnroom: A room containing a kiln. The kilnroom was very warm.

Kilnwork: Work created using a kiln. The pottery showed fine kilnwork.

Kiltmaker: A person who makes kilts. The kiltmaker stitched the cloth.

Kimono: A traditional Japanese robe. She wore a silk kimono.

Kinfolk: Family relatives. His kinfolk visited during the holiday.

Kingbird: A bird that catches insects in flight. The kingbird sat on a branch.

Kingcup: A bright yellow flower. The kingcup grew near the pond.

Kingfisher: A colorful bird that dives for fish. The kingfisher caught a fish.

Kinglet: A very small bird. The kinglet sang softly.

Kingship: The state of being a king. The story spoke of kingship.

Kingsize: Very large in size. The hotel had a kingsize bed.

Kink: A twist in rope or hair. The cord had a kink.

Kinky: Curly or twisted. Her hair looked kinky.

Kipper: A smoked fish. They ate kipper for breakfast.

Kir: A drink made with juice and wine. The café served kir.

Kisser: A playful word for lips. The baby puckered his kisser.

Kit: A set of tools in one package. The doctor carried a medical kit.

Kitchen: A room used for cooking food. The family ate in the kitchen.

Kitty: A friendly name for a cat. The kitty slept on the chair.

Klaxon: A loud warning horn. The ship sounded its klaxon.

Kleenex: A soft paper tissue. He wiped his nose with a Kleenex.

Klick: A short word for kilometer. The camp was one klick away.

Klondike: A region known for gold mining. Many people went to the Klondike.

Knack: A natural skill at doing something. She has a knack for drawing.

Knackered: Very tired. After the race he felt knackered.

Knave: A dishonest man in old stories. The knave tricked the hero.

Knavery: Dishonest behavior. The tale warned about knavery.

Kneeler: A cushion used for kneeling. The kneeler was soft.

Knell: The sound of a bell for a funeral. The church bell rang a knell.

Knighthood: The title of being a knight. The king granted knighthood.

Knitwear: Clothes made from knitted yarn. The shop sold warm knitwear.

Knotwork: Decorative patterns made with knots. The art showed beautiful knotwork.

Kelp: A large type of seaweed that grows in the ocean. Fish swam around the kelp.

Ken: Knowledge or understanding of something. The idea was beyond his ken.

Keel: The main bottom beam of a boat. The keel keeps the boat steady.

Keen: Very eager or interested. She was keen to start the game.

Keg: A small wooden or metal barrel. The farmer filled a keg with water.

Kernel: The inside part of a nut or grain. The corn kernel was yellow.

Kerchief: A small cloth used for wiping or covering the head. She tied a kerchief around her hair.

Kestrel: A small bird of prey. The kestrel hovered in the sky.

Kettle: A metal pot used for boiling water. The kettle began to whistle.

Keyhole: A small hole where a key fits. He looked through the keyhole.

Keypad: A panel with buttons for numbers. She entered the code on the keypad.

Keyring: A ring used to hold keys together. His keys were on a keyring.

Keyboard: A board with keys used to type. She typed quickly on the keyboard.

Keynote: The main speech of an event. The keynote started the conference.

Keystone: The most important part of something. Trust is the keystone of friendship.

Khaki: A light brown color often used for clothes. He wore khaki pants.

Kick: A strike with the foot. The player gave the ball a strong kick.

Kickball: A playground game where players kick a ball. They played kickball after school.

Kickstand: A support that holds a bicycle upright. He pushed down the kickstand.

Kid: A young child. The kid laughed loudly.

Kiddo: A friendly way to call a child. “Good job, kiddo,” said the teacher.

Kidnap: To take someone away by force. The police stopped the kidnap plan.

Kidnapper: A person who kidnaps someone. The kidnapper was caught.

Kidney: An organ that cleans the blood. Healthy kidneys help the body.

Kidney bean: A red bean used in cooking. The soup had kidney beans.

Kill: To cause something to die. The farmer used care not to kill the plants.

Killer whale: A large black and white ocean animal. The killer whale jumped from the water.

Kiln: A hot oven used to bake clay or bricks. The potter used a kiln.

Kilogram: A unit of weight equal to 1000 grams. The rice weighed one kilogram.

Kilometer: A unit of distance equal to 1000 meters. The school is two kilometers away.

Kilobyte: A small unit of computer data. The file was only a kilobyte.

Kilowatt: A unit of electric power. The heater used one kilowatt.

Kilt: A traditional Scottish skirt-like clothing. He wore a kilt at the parade.

Kind: Caring and helpful to others. She is kind to animals.

Kindness: The act of being kind. His kindness helped a stranger.

Kindred: People who belong to the same family. Her kindred visited during the festival.

King: A male ruler of a country. The king spoke to the people.

Kingdom: Land ruled by a king or queen. The kingdom was peaceful.

Kingfisher: A colorful bird that catches fish. The kingfisher dived into the river.

Kingship: The position of being a king. His kingship lasted many years.

Kinsman: A male family relative. His kinsman came to visit.

Kinswoman: A female family relative. Her kinswoman brought gifts.

Kinship: A close family relationship. They felt strong kinship.

Kiosk: A small booth that sells things. He bought a newspaper at the kiosk.

Kit: A set of tools or items for a purpose. She opened her sewing kit.

Kitchen: A room used for cooking food. The kitchen smelled nice.

Kitchenware: Tools used in cooking. The shop sold kitchenware.

Kite: A toy that flies in the wind on a string. The kite flew high.

Kitten: A young cat. The kitten slept on the sofa.

Kiwi: A small brown fruit with green inside. The kiwi tasted sweet.

Kale: A leafy green vegetable. She added kale to the salad.

Kangaroo: A large animal from Australia that jumps on strong back legs. The kangaroo hopped across the field.

Karaoke: Singing along to recorded music with lyrics on a screen. They enjoyed karaoke at the party.

Karat: A unit used to measure gold purity. The ring was made of 24-karat gold.

Karma: The idea that actions bring good or bad results. People believe good karma comes from good deeds.

Kayak: A small narrow boat moved with a paddle. They paddled the kayak on the lake.

Kayaker: A person who paddles a kayak. The kayaker moved smoothly across the water.

Kayaking: The activity of paddling a kayak. Kayaking is fun on calm rivers.

Kazoo: A small musical instrument that buzzes when you hum into it. The child played a tune on the kazoo.

Keenness: Strong interest or excitement. His keenness for science was clear.

Keeper: A person who takes care of something. The zoo keeper fed the lions.

Keepsake: An object kept to remember someone or something. The photo was a precious keepsake.

Kennel: A small house for a dog. The dog slept in its kennel.

Keratin: A protein that forms hair and nails. Keratin keeps hair strong.

Kerosene: A type of fuel used in lamps. The lamp burned kerosene.

Ketchup bottle: A container that holds ketchup. He squeezed the ketchup bottle gently.

Kettle bell: A round metal weight used for exercise. She lifted the kettle bell.

Kettledrum: A large drum used in orchestras. The kettledrum made a deep sound.

Keycard: A plastic card used to unlock doors. The hotel gave him a keycard.

Keychain: A small chain used to hold keys. His keychain had a tiny car charm.

Keymaker: A person who makes or copies keys. The keymaker cut a new key.

Keynote speaker: The main speaker at an event. The keynote speaker welcomed everyone.

Keypress: Pressing a key on a keyboard. Each keypress appeared on the screen.

Keyway: The slot where a key fits in a lock. The key slid into the keyway.

Kickoff: The start of a game or event. The football kickoff began the match.

Kickstep: A step made by kicking the ground. The climber used a kickstep in the snow.

Kidcare: The care given to children. The center offers kidcare services.

Kidnap rescue: Saving someone from kidnappers. The police planned a kidnap rescue.

Kidproof: Made safe for children. The bottle had a kidproof cap.

Kidney stone: A small hard piece that forms in the kidney. The doctor treated the kidney stone.

Kilocalorie: A unit used to measure food energy. The snack had fifty kilocalories.

Kiloliter: A unit equal to 1000 liters. The tank held one kiloliter of water.

Kiloton: A unit used to measure explosive power. The blast measured several kilotons.

Kilovolt: A unit of electrical voltage. The machine used a kilovolt of power.

Kimono: A traditional Japanese robe. She wore a beautiful kimono.

Kindhearted: Having a caring and gentle nature. The kindhearted boy helped the puppy.

Kindling: Small sticks used to start a fire. He gathered kindling in the forest.

Kindred spirit: Someone with similar ideas or feelings. They became kindred spirits quickly.

Kingbird: A type of bird that catches insects in flight. The kingbird perched on a branch.

Kingcup: A bright yellow wildflower. The kingcup grew near the pond.

Kingpin: The most important person in a group. He was the kingpin of the team.

Kingsnake: A non-venomous snake found in America. The kingsnake moved quietly through the grass.

Kingwood: A dark purple hardwood used in furniture. The table was made from kingwood.

Kinsfolk: Family members and relatives. Her kinsfolk gathered for dinner.

Kipper: A fish that has been salted and smoked. The fisherman prepared kippers.

Kiteboard: A board used for riding waves with a kite. He balanced on the kiteboard.

Kiteboarding: A sport using a kite and board on water. Kiteboarding requires strong wind.

Kitemaker: A person who makes kites. The kitemaker built colorful kites.

Kitestring: The string attached to a kite. She held the kitestring tightly.

Kitbag: A bag used to carry sports gear. He packed shoes in his kitbag.

Kale: A green leafy vegetable. She added kale to her salad.

Kangaroo: A jumping animal from Australia. The kangaroo hopped across the field.

Karaoke: Singing along with recorded music. They enjoyed karaoke at the party.

Karat: A unit to measure gold purity. The ring was 24 karat gold.

Karma: The idea that good deeds bring good results. Helping others brings good karma.

Kayak: A small boat moved with a paddle. He paddled the kayak down the river.

Kazoo: A small musical instrument that buzzes when you hum. The child played a tune on the kazoo.

Keel: The main beam at the bottom of a boat. The keel keeps the boat steady.

Keen: Very eager or interested. She was keen to start the game.

Keeper: A person who takes care of animals or things. The zoo keeper fed the lions.

Keepsake: An object kept to remember someone. The necklace was a precious keepsake.

Kernel: The inner part of a seed or grain. The corn kernel was yellow.

Kerchief: A small cloth worn on the head or used for wiping. She tied a kerchief around her head.

Kestrel: A small bird that hunts insects. The kestrel hovered in the sky.

Ketchup: A red sauce made from tomatoes. He poured ketchup on his fries.

Key: A small tool used to unlock a lock. He inserted the key into the door.

Keyboard: A set of keys used for typing. She typed quickly on the keyboard.

Keyhole: A small opening where a key fits. He peeked through the keyhole.

Keyring: A ring used to hold keys. His keyring had a tiny toy attached.

Keystone: The most important part of something. Trust is the keystone of friendship.

Khaki: A light brown color. He wore khaki pants.

Kick: To strike something with your foot. He gave the ball a strong kick.

Kickball: A playground game where you kick a ball. They played kickball at recess.

Kid: A young child. The kid laughed loudly.

Kiddo: A friendly way to say “child.” “Well done, kiddo,” said the teacher.

Kidney: An organ that cleans the blood. Healthy kidneys keep your body strong.

Kidney bean: A red bean used in cooking. She added kidney beans to the soup.

Kill: To end the life of something. Farmers make sure not to kill young plants by mistake.

Killer whale: A large black and white ocean animal. The killer whale jumped out of the water.

Kiln: A hot oven used to bake clay or bricks. The potter used a kiln to bake the vase.

Kilogram: A unit of weight equal to 1000 grams. The watermelon weighed two kilograms.

Kilometer: A unit of distance equal to 1000 meters. The park is three kilometers away.

Kilowatt: A unit of electricity. The heater used one kilowatt of power.

Kilt: A traditional Scottish skirt-like garment. He wore a kilt at the parade.

Kind: Being nice and caring to others. She is kind to animals.

Kindhearted: Having a gentle and caring nature. The kindhearted girl shared her toys.

Kindness: The act of being kind. His kindness helped a stranger.

King: A male ruler of a country. The king wore a golden crown.

Kingdom: Land ruled by a king or queen. The kingdom was peaceful and beautiful.

Kingfisher: A bird that catches fish in rivers. The kingfisher dived into the water.

Kingship: The position of being a king. His kingship lasted many years.

Kinsman: A male family relative. His kinsman came to visit.

Kinswoman: A female family relative. Her kinswoman brought gifts.

Kinship: A family relationship. They felt strong kinship with their cousins.

Kiosk: A small booth that sells items. He bought a newspaper at the kiosk.

Kit: A set of items for a specific purpose. The art kit had paints and brushes.

Kitten: A young cat. The kitten purred softly.

Kiwi: A small brown fruit with green inside. The kiwi tasted sweet.

Klaxon: A loud warning horn. The ship sounded the klaxon.

Knack: A special talent for doing something. She has a knack for drawing.

Knapsack: A bag worn on the back. He carried books in his knapsack.

Knave: A dishonest man in old stories. The knave tricked the hero.

Kneel: To rest on your knees. She had to kneel to tie her shoes.

Kneepad: A pad to protect the knees. He wore kneepads while skating.

Knee: The joint between the thigh and lower leg. He scraped his knee while running.

Kneecap: The round bone in front of the knee. He hurt his kneecap.

Knit: To make fabric using yarn and needles. She learned to knit a scarf.

Knitting: The act of making fabric with yarn. Knitting is fun for beginners.

Knob: A round handle on a door or drawer. He turned the door knob.

Knock: To hit a door to get attention. She gave a gentle knock.

Knot: A tied loop in a rope. The sailor tied a strong knot.

Knowledge: Facts and information you know. Reading gives knowledge.

Known: Something that people are familiar with. This park is well known.

Knockout: A boxing term when a fighter is knocked down. The fighter got a knockout.

Knuckle: The joint of a finger. He hit the ball with his knuckle.

Koala: A tree-dwelling animal from Australia. The koala ate eucalyptus leaves.

Kobold: A mythical small creature from stories. The kobold hid in the forest.

Kokopelli: A flute-playing spirit in Native American stories. Kids listened to the Kokopelli tale.

Komodo: A giant lizard from Indonesia. The Komodo dragon is very strong.

Konbu: A type of seaweed used in cooking. The soup had pieces of konbu.

Kong: A large ape in stories and movies. The giant Kong climbed the building.

Kool: A playful way to say “cool.” That new hat looks kool!

Korma: A creamy curry dish from India. She cooked chicken korma.

Kosher: Food that follows Jewish dietary rules. The meal was certified kosher.

Kraken: A giant sea monster from legends. The kraken rose from the ocean.

Krill: Tiny shrimp-like creatures eaten by whales. The whale ate a lot of krill.

Kris: A curved sword from Indonesia. The warrior held a kris.

Kudu: A large African antelope with twisted horns. The kudu ran across the plains.

Kumquat: A small citrus fruit. The kumquat was sour and sweet.

Kung fu: A Chinese martial art. He practiced kung fu every day.

Kup: A small container for liquids. She poured tea into the kup.

Kurta: A long shirt worn in India. He wore a kurta to the festival.

Kvass: A drink made from fermented bread in Russia. They shared a cup of kvass.

Kyoto: A city in Japan. Kyoto has many beautiful temples.

Kyanite: A blue mineral used in jewelry. The ring had a kyanite stone.

Kymograph: A device that records changes over time. The scientist used a kymograph.

Kyat: The currency of Myanmar. He exchanged dollars for kyat.

Kymogram: A graph showing motion over time. The teacher drew a kymogram.

Kyphosis: A condition where the back curves. Doctors checked for kyphosis.

Kiosk attendant: A person working at a small booth. The kiosk attendant sold tickets.

Kickstand: A support to keep a bike upright. He put the kickstand down.

Kickoff: The start of a game. The soccer game began with the kickoff.

Kicky: Something lively or fun. She wore a kicky dress.

Kiddish: Something playful like a child. His laugh was kiddish.

Kidnapper: A person who takes someone by force. The police caught the kidnapper.

Kinetics: The study of motion. Science class taught about kinetics.

Kinetic energy: Energy something has because it’s moving. The ball had kinetic energy.

Kinglet: A very small bird. The kinglet sang in the garden.

Kingmaker: A person who helps choose a ruler. The kingmaker advised the council.

Knockabout: Something playful or rough. The kids had a knockabout game.