barge in
Definitions
To enter a room or building suddenly and without invitation.
To interrupt a conversation or activity rudely or abruptly.
Examples
Please knock before you barge in, as I might be in the middle of a meeting.
It is incredibly rude to barge in on a private conversation without being invited.
He didn't even wait for an answer before he decided to barge in and start complaining.
Synonyms
intrude interrupt butt in interfere encroach burst in intervene