To butt in is to interrupt a conversation you were not part of. Straight in, without waiting for a gap.
It is informal and disapproving, so accusing somebody of butting in is a real complaint. The image is of a goat butting its way through. It takes on when the conversation is named. Cut in does the same job. There is a polite British formula that softens it, since sorry to butt in is what people say while doing exactly that.
1phrasebutt inTo interrupt a conversation rudely.
“Do not butt in while other people are speaking.”
Practised in Phrasal Verbs, A Man Called Ove
First appears in chapter 11 of A Man Called Ove.
Practise this word