intrude on

Related to intrude on: intrusiveness, intrude into

intrude (up)on (someone or something)

To involve oneself in something in a way that is meddlesome or unwelcome. I really try not to intrude on my kids, even though they think I'm too involved in their lives. I accidentally intruded upon their seminar before it was over, oops. I didn't realize it was three hours long!
See also: intrude
Farlex Dictionary of Idioms.

intrude (up)on someone or something

to encroach on someone or something or matters that concern only someone or something. (Upon is formal and less commonly used than on.) I didn't mean to intrude upon you. Please don't intrude on our meeting. Please wait outside.
See also: intrude, on
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • intrude
  • intrude (up)on (someone or something)
  • intrude into
  • intrude into (something)
  • intrude oneself into
  • interject
  • interject (someone or something) into (something)
  • interject into
  • horn in on
  • horn in on (something)