butt in

to interrupt

• Tom doesn't want Mary butting in.
• The last thing I want to do is butt in.
• There's no need for you to butt in. Just let him do this on his own.
• I don't want to butt in all the time when the two of them are fighting.
• Why does Tom keep butting in to our conversation? He doesn't even know Mary.
• There are things I'd like to say but to butt in now would be what they call uncouth.
• Hey, we're trying to have a serious discussion here so I'd appreciate it if you wouldn't butt in so irresponsibly.
• Sorry to butt in, but I couldn't help overhearing that you're on your way to Boston. I live there and I'd be happy to put you two up for the night.