you never know - definition and synonyms

phrase
  1. 1
    used for saying that something may happen at some time in the future
    you never know what/how/if etc:

    You’d better be nice – you never know when you might need his help.

  2. 2
    used for saying that something might be possible even though it does not seem likely

    You never know – he might offer you a part in his film.

See also main entry: never