To be one's breadth of ability or responsibility. I can't accept amount reports—that's not my department.Car adjustment is my dad's department, so he should be able to advice you out.Learn more: department
be somebody’s department
(spoken) be article that somebody is amenable for or knows a lot about: Don’t ask me about it — that’s Helen’s department, not mine.Learn more: departmentLearn more:
An be (not) (one's) department idiom dictionary is a great resource for writers, students, and anyone looking to expand their vocabulary. It contains a list of words with similar meanings with be (not) (one's) department, allowing users to choose the best word for their specific context.
類似の言葉の辞書、別の表現、同義語、イディオム イディオム be (not) (one's) department