Fiddle with and Work on

Fiddle with verb - To handle thoughtlessly, ignorantly, or mischievously.

Work on and fiddle with are semantically related. In some cases you can use "Work on" instead a verb "Fiddle with".

Work on verb - To exert effort in order to do, make, or perform something.

Fiddle with and work on are semantically related. Sometimes you can use "Fiddle with" instead a verb "Work on".