interrupting; butting in; cutting in
Colloquial term for interrupting someone while they are speaking, often with a sense of eagerness or aggression. Derived from 食い込み気味.
He always butts into the conversation eagerly.
I was a bit troubled by the interrupting question.
割り込む is a more general verb for 'to cut in' or 'to interrupt', while 食い気味 specifically describes the manner of interrupting speech.
Derived from 食い込み (the continuative form of 食い込む, 'to cut in') + 気味 ('tending to'), meaning 'tending to cut in'.