Definition of ain't in English:

ain't

contraction

informal
  • 1Am not; are not; is not.

    ‘if it ain't broke, don't fix it’
    • ‘The defense is doing all they can out there and we ain't matching them at all.’
    • ‘We ain't running from nothing. We ain't worried about nothing.’
    • ‘In ‘The Kid,’ the poet unveils the hidden core beneath a comfortable mask, telling about how the subject talks candidly about his father ‘sometimes when we ain't talking about baseball.’’
    • ‘We ain’t tryin to be something we’re not.’
    • ‘I ain’t no Baby Boomer and will never buy products, services or opinions from people who approach me as such.’
    1. 1.1Has not; have not.
      ‘they ain't got nothing to say’
      • ‘Bet she ain't ridden a bike in years.’
      • ‘Hey sis, I ain't forgotten about ya. I still love you.’
      • ‘He ain't won a fight in years.’
      • ‘Baseball's origins ain't found till they're found.’
      • ‘Well, he's a man who loves being on the hills and what he ain't climbed ain't worth climbing.’

Usage

The use of ain't was widespread in the 18th century, typically as a contraction for am not. It is still perfectly normal in many dialects and informal speech in both Britain and North America. Today, however, it does not form part of standard English and should never be used in formal or written contexts. See also aren't

Pronunciation:

ain't

/eɪnt/