deep down - definition and synonyms

  1. 1
    if you know or feel something deep down, you do know or feel it, although you try to pretend that you do not

    Deep down I knew that Caroline was right.

  2. 2
    if you have a particular quality deep down, you have that quality, although you try to keep it hidden from other people

    Deep down he’s really a very thoughtful person.

See also main entry: deep