Word library
8,130 words, searchable by word, definition, part of speech, and CEFR level.
Information or opinions given about how well something is working or being done.
A process in which the output of a system is fed back in as an input, either strengthening or weakening what happens next.
To experience a physical sensation or emotion, or to touch something to sense its texture.
An emotional state, or a physical sensation, or a belief or opinion.
The plural of foot, the body parts at the bottom of your legs that you walk on.
Well chosen or suited to a particular situation; apt.
Relating to cats, or having qualities associated with cats, such as gracefulness.
Belonging to the same group as you; sharing a particular situation with you.
Belonging to the sex that can give birth or produce eggs.
A barrier made of wood, wire, or metal that marks the edge of an area of land.
A sport in which two people fight with thin swords, following strict rules.
Wild, especially describing an animal that has escaped from being a pet or was born in the wild.
To undergo a chemical process in which sugars are broken down by yeast or bacteria, often producing alcohol or gas.
A chemical process in which sugars are broken down by yeast or bacteria, often producing alcohol or gas.
A green plant with feathery leaves that has no flowers.
Extremely fierce, violent, or aggressive.
A small, long-bodied animal related to the weasel, sometimes kept as a pet.
A type of magnetism in certain materials where neighboring atomic magnetic moments point in opposite directions but with unequal strength, leaving an overall net magnetism.
A boat that regularly carries passengers and vehicles across a stretch of water.
Able to produce a lot of good crops or plants, or, more broadly, able to produce ideas, growth, or offspring.
The joining of a male and female reproductive cell to create a new living thing, or the process of adding nutrients to soil.
To add substances to soil to help plants grow, or to make an egg cell able to develop into a new living thing.
A natural or chemical substance added to soil to help plants grow better.
The process by which a male and female reproductive cell combine to begin the development of a new organism, or the act of adding nutrients to soil.
A substance added to soil to help plants grow better.
Showing very strong and sincere feeling or belief.
Showing intense and passionate feeling.
An event, often held every year, where people gather to celebrate something through music, food, or tradition.
Cheerful and celebratory, associated with a holiday or celebration.
To go and get something and bring it back.
Having an extremely unpleasant smell.
To restrict someone's freedom or ability to act.
Relating to a historical system in which people worked and fought for a lord in exchange for land and protection.
A noble who, under the feudal system, owned land and demanded labor, loyalty, or produce from those living on it.
A social and economic system in medieval Europe in which people worked and fought for a lord in exchange for land and protection.
A body temperature that is higher than normal, usually caused by illness.
A small number of people or things.
A thin thread of natural or artificial material, or a substance in food that helps digestion.
Changing frequently, especially in loyalty, opinion, or affection.
Stories about imaginary people and events, written for entertainment rather than as fact.
Faithfulness to a person, cause, or original source, or, technically, how accurately a copy reproduces the original.
A large open area of land, often used for growing crops or playing sports.
Imaginary lines used to show the direction and strength of a magnetic or electric field.
Very aggressive or intense, often in a frightening way.
The number after fourteen and before sixteen.
Coming after the fourth and before the sixth in a sequence.
The number equal to five tens.
A small, soft fruit with sweet flesh and many tiny seeds inside.