On someone's part
English vocabulary and translations (See all)
(It was a mistake) on his part!: (It was a mistake) of his!
- "Due to an unfortunate oversight on Polly's part (she has since been chastised), this wasn't noticed until today, roughly five and half months since the two of you joined the team. What I'm saying is that you two must visit company physician Dr. Bob Loblaw sometime within the next two weeks."
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