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Wordabulary

Word library

8,130 words, searchable by word, definition, part of speech, and CEFR level.

justify Verb A2

To give good reasons that show an action or decision was right or reasonable.

juxtapose Verb B2

To place two things side by side, especially to highlight the contrast between them.

juxtaposition Noun B2

The placing of two things side by side to highlight the contrast between them.

kale Noun A1

A dark green leafy vegetable with a slightly bitter, hearty taste.

kangaroo Noun A1

A large Australian animal that hops on powerful back legs and carries its young in a pouch.

karate Noun A1

A Japanese martial art that uses quick, sharp movements like kicks and punches.

keen Adjective C1

Showing eager interest or enthusiasm, or having a sharp sense or ability.

keep Verb A1

To continue having or doing something, or to store something in a particular place.

kelp Noun A2

A large brown seaweed that grows in cold coastal waters.

ketchup Noun A1

A thick, sweet and tangy red sauce made mainly from tomatoes.

kettle Noun A1

A container with a spout, used for boiling water.

key Noun A1

A small metal object used to lock or unlock a door, or to start an engine.

keyboard Noun A1

An electronic musical instrument with black and white keys, or the set of keys used to type on a computer.

keynote Noun B1

The main speech at a conference or event, usually setting the tone for what follows, or the fundamental idea underlying something.

khaki Noun A1

A dull yellowish-brown color, often used for military uniforms.

kick Verb A1

To hit something with your foot.

kid Noun A2

An informal word for a child, or a young goat.

kidney tubule Noun B2

A tiny tube in the kidney where filtered fluid is processed and useful substances are reabsorbed back into the blood.

kill Verb A2

To cause a person, animal, or other living thing to die.

killing Noun B1

The act of causing someone or something to die, especially a specific instance of murder.

kilogram Noun A1

A metric unit of weight equal to one thousand grams.

kilometer Noun A2

A unit of length equal to one thousand meters, used in most countries outside the United States.

kilometre Noun A2

A unit of distance equal to one thousand meters.

kind Adjective A1

Caring about others and willing to help them.

kindle Verb C1

To start a fire burning, or to cause a feeling or interest to begin.

kindness Noun A1

The quality of being gentle, caring, and helpful toward others.

kinematic Adjective B2

Relating to the motion of objects without considering the forces that cause that motion.

kinematics Noun B2

The branch of physics that describes the motion of objects without considering the forces that cause it.

kinetic Adjective B2

Relating to or produced by movement.

kinetic energy Noun B1

The energy an object has because it is moving.

kinetic energy transfer Noun B2

The passing of energy of motion from one object or particle to another, typically during a collision.

kinetic theory Noun B2

A scientific model that explains the behavior of gases by describing their particles as constantly moving.

king Noun A2

A man who rules a country, usually inheriting the position through his family.

kingdom Noun A1

A country ruled by a king or queen.

kinship Noun B1

A close connection between people, either through family ties or shared feelings and experiences.

kirchhoff's laws Noun B2

Two rules used to analyse electric circuits, one stating that current entering a junction equals current leaving it, the other that voltages around a closed loop sum to zero.

kiss Verb A1

To touch someone with your lips as a sign of love, greeting, or respect.

kitchen Noun A1

The room in a house where food is stored, prepared, and cooked.

kite Noun A1

A light frame covered in fabric or paper that flies in the wind on the end of a long string.

kitten Noun A1

A young cat.

kiwi Noun A1

A small fruit with fuzzy brown skin and bright green flesh full of tiny black seeds.

knack Noun A2

A special skill or ability to do something well, often one that seems to come naturally.

knee Noun A1

The joint in the middle of your leg where it bends.

kneel Verb A1

To go down onto one or both knees.

knell Noun C1

The sound of a bell rung slowly, especially to announce a death, or a sign that something is about to end.

knife Noun A1

A tool with a sharp blade used for cutting.

knock Verb A1

To hit a surface, usually a door, sharply with your knuckles to get someone's attention.

know Verb A1

To have information or understanding about something in your mind.