Idiom
muck around withmuck around (with something)
to do something without a serious purpose.Why was she mucking around in such a risky neighborhood?I kept working on this text until I thought it was good, and then I tried not to muck around with it anymore.
Phr V
muck around with
mucks, mucking, mucked
muck about/around with sth
British & Australian informal to try to change or improve something, usually with bad resultsI wouldn't muck about with the engine if I were you - I'd take it to the garage.Tom's been mucking about with the video and I can't get it to work.