Definition of on one's part in English:

on one's part


(also on the part of)
  • Used to ascribe responsibility for something to someone.

    ‘there was a series of errors on my part’
    • ‘The Institute concede there was an error on their part, but insist the athlete must bear some responsibility too.’
    • ‘So there is a bit of responsibility on my part not to treat it as a gimmick.’
    • ‘There was very little mind reading required on my part as to what was going on, and he made space for us to do a family outing as well.’
    • ‘In retrospect, it's clear that we regarded that as an error on their part.’
    • ‘But it was a major error on their part to attack the U.N. It does show they are getting desperate.’
    • ‘I think it was good to promote safe and responsible drinking on their part.’
    • ‘Similarly there is a responsibility on the part of the walker to honour the deal.’
    • ‘It transpires that it was a clerical error on their part - obviously - and a huge one too.’
    • ‘My initial instinct is to take her side, but that's fairly obviously just a knee-jerk response on my part.’
    • ‘You definitely deserved some of it, but a lot of it was error on my part, and I'm sorry.’
    by, made by, done by, carried out by, caused by, from, in, of