- Butt in or into is a slang term implying intrusion in a meddling or officious way stop butting into my business See also syn. study at trespass.
- Interlope implies an intrusion upon the rights or privileges of another to the disadvantage or harm of the latter the interloping merchants have ruined our trade
- Obtrude connotes even more strongly the distractive nature or the undesirability of the invasion side issues keep obtruding into the discussion
- Intrude implies the forcing of oneself or something upon another without invitation, permission, or welcome to intrude upon another's privacy