The meaning of ALLY is to unite or form a connection or relation between : associate —usually used with with or to. How to use ally in a sentence.

An ally is someone that aligns with and supports a cause with another individual or group of people.A straight ally, more specifically, is an individual outside of the LGBTQ community that supports their …

If you describe someone as your ally, you mean that they help and support you, especially when other people are opposing you.

ally unify, join; a partner, friend, or confederate: Canada was our ally in World War II.

ally of sb She is known to be a longtime ally of the chancellor. He is generally considered to be the prime minister's closest political ally. She consulted someone who had always been a staunch friend and ally.

Definition of ally noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

A person who feels fondness or regard towards another; a friend, a well-wisher. Now rare except in sense 1b.

Biology a plant, animal, or other organism bearing an evolutionary relationship to another, often as a member of the same family: The squash is an ally of the watermelon.

Ally comes from the Latin word alligare, meaning "to bind to," like nations who are allies in wartime — they will act together, and protect one another. You can also use ally as a verb, meaning "join forces …

Feb 2, 2026 · ally (third-person singular simple present allies, present participle allying, simple past and past participle allied) (transitive) To unite or form a connection between (people or things), as …