Definition of a (or one) hundred per cent in English:

a (or one) hundred per cent

phrase

  • 1Entirely; completely:

    ‘I'm not a hundred per cent sure’
    • ‘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
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    1. 1.1informal [usually with negative] Completely fit and healthy:
      ‘she did not feel one hundred per cent’
    2. 1.2informal Maximum effort and commitment:
      ‘he always gave one hundred per cent for United’
      • ‘However for the last 3-4 years it seems that giving a hundred per cent is an occasional bonus.’