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.’