on earth - definition and synonyms

  1. 1
    used for emphasizing that someone or something is the best, worst, biggest etc in the world
  2. 2

    nothing/nowhere etc on earth

    used for adding emphasis to negative statements

    Nothing on earth could get me to speak to her.

    There is no reason on earth why we shouldn’t just leave.

  3. 3

    what/why/how/where etc on earth

    spoken used for adding emphasis to questions

    What on earth do you mean?

    Why on earth would I want to work for you?

  4. 4

    like nothing on earth

    informal very good or very bad

    The sound effects are like nothing on earth.

    I felt like nothing on earth next day.

See also main entry: earth