I bet/I’ll bet - definition and synonyms

phrase spoken
  1. 1
    used for saying that you understand or agree with what someone has just said

    ‘I couldn’t say no to an offer like that.’ – ‘I’ll bet!’

  2. 2

    I bet/I’ll bet (that)

    spoken used for saying that you are sure about something

    I bet Charles has taken it.

    I bet you the train will be late.

See also main entry: bet