Definition of a hundred percent in English:

a hundred percent

phrase

(also one hundred percent)
  • 1Entirely; completely.

    ‘I'm a hundred percent sure of that’
    • ‘Addressing a packed press conference he said: ‘I am one hundred per cent responsible for this loss.’’
    • ‘It has its advantages, but I don't think it's a hundred per cent a good thing.’
    absolutely, completely, totally, fully, wholly
    1. 1.1 informal usually with negative Completely fit and healthy.
      • ‘I wasn't exactly one hundred percent’
    2. 1.2 informal Maximum effort and commitment.
      • ‘he always gave one hundred percent for the team’
      • ‘However for the last 3-4 years it seems that giving a hundred per cent is an occasional bonus.’