Definition of on one's part in English:
on one's part
phrase
(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
Are You Learning English? Here Are Our Top English Tips