meddle
Definitions
To interfere in or busy oneself unduly with something that is not one's concern.
To touch or handle something, especially in a way that causes damage or disorder.
Examples
I wish my neighbors would stop trying to meddle in my personal affairs.
It is never a good idea to meddle with machinery you do not understand.
She was warned not to meddle in the company's internal politics if she wanted to keep her job.