Synonyms for butt-in
EXAMPLES FROM THE WEB FOR BUTT-IN
Unless you'll say outright that I'll be a butt-in, I'm going with you.
Sure enough it's none of my butt-in what sort of thing you do.
Sure, it never wa'n't none of my butt-in, but I used to tell old man Fairfax that Ranlett was narrer between the horns.