intrude (up)on (someone or something)

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

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