putter, mess around, potter, tinker, monkey, monkey around, muck about, muck around(verb)

do random, unplanned work or activities or spend time idly

"The old lady is usually mucking about in her little house"

muck about(Verb)

To do random unplanned work or spend time idly

muck about(Verb)

To do somethings with a piece of equipment when you do not understand how it works.

muck about(Verb)

To be playful; full of fun and high spirits