heaven (only/alone) knows - definition and synonyms

phrase spoken
  1. 1
    used for emphasizing what you are saying

    It was her first holiday in years, and heaven knows she needed it.

  2. 2

    heaven knows how/what/why etc

    spoken used for saying that you do not know something or cannot imagine it

    Heaven knows what will happen now.

  3. 3

    heaven knows how much/many/long

    spoken used for emphasizing that something has happened a lot or too much

    I’ve had heaven knows how many people in here looking for you!

See also main entry: heaven