Word library
8,130 words, searchable by word, definition, part of speech, and CEFR level.
To give someone courage or confidence to do something.
To involve someone deeply in an argument, conflict, or difficult situation, often against their wishes.
An animal or plant in the earliest stage of development, before it is fully formed.
Relating to an embryo, or, more broadly, in a very early stage of development.
A bright green precious stone, or the deep green color associated with it.
To come out from somewhere hidden, or to become known or noticeable.
A sudden, serious situation that needs immediate action.
A person who leaves their own country to live permanently in another.
To leave one's own country permanently to live in another.
The act of leaving one's own country to live permanently in another.
A position of fame, respect, or high standing within a particular field.
Famous and respected within a particular field.
A substance, especially a gas, that is released into the air, or the act of releasing it.
Substances, especially gases, that are released into the air, often from vehicles or factories.
To send out something such as light, heat, sound, or gas.
A small digital picture used in text messages to show a feeling or an idea.
A strong feeling, such as joy, anger, or fear, that comes from a person's situation or thoughts.
Special importance or attention given to something.
To give special importance to a point or idea so that people notice it.
A group of countries or territories controlled by a single, powerful ruler or government.
Based on observation or experiment rather than on theory or opinion alone.
Information gathered through direct observation or experiment, rather than through theory alone.
A chemical formula showing the simplest whole-number ratio of atoms of each element in a compound.
The idea that knowledge comes mainly from sensory experience and observation rather than reasoning alone.
To give someone paid work, or to make use of something.
To give someone the confidence, authority, or ability to do something.
Containing nothing inside.
To try to match or copy someone's achievements or behavior, usually because you admire them.
To make it possible for someone to do something, or for something to happen.
A small area within a larger region that is culturally or politically distinct from its surroundings.
An area surrounded by a fence or wall, especially one built to contain animals.
The historical process, especially in Britain, of fencing off previously shared farmland into privately owned plots.
To meet or experience something, often unexpectedly.
To give someone support or confidence to do something.
To gradually intrude on someone's territory, rights, or time.
The process by which a person learns and absorbs the norms, values, and behaviors of the culture around them, especially as a child.
The final part or point of something.
To put something or someone at risk of harm, or to threaten a species with extinction.
At risk of no longer existing, used especially about animal species.
A serious attempt to achieve something, especially something difficult.
Regularly found in a particular area or group of people, and rarely occurring elsewhere.
The network of glands in the body that release hormones directly into the bloodstream to regulate growth, metabolism, and other functions.
A network of membranes inside a cell that helps make and transport proteins and other materials.
To publicly state support for a person, product, or idea.
An internal skeleton, made of bone or cartilage, found inside the body of an animal such as a human.
A relationship in which one organism lives inside the cells of another, to the point that the two become mutually dependent, as is believed to have happened with mitochondria.
Absorbing heat from its surroundings, used mainly to describe a chemical reaction or process.
To experience something difficult over a period of time without giving up.