Definition of on the part of or on my, their, etc., part in English:

on the part of (or on my, their, etc., part)

Used to ascribe responsibility for something to someone: there was a series of errors on my part
More example sentences
  • 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.
by, made by, done by, carried out by, caused by, from, in, of; for which someone is responsible
See parent entry: part

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Word of the day flippant
Pronunciation: ˈflɪp(ə)nt
not showing a serious or respectful attitude