student asking question

What's "ain't" mean? Is it commonly used?

teacher

Native speaker’s answer

Rebecca

It's commonly used in informal conversation, yes! "Ain't" is a contraction and informal version of "is not" or "has/have not." Ex: They ain't going to the library. They goin' to the diner. => are not Ex: He ain't good at playing chess. = He isn't good at playing chess.

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