to keep moving and touching something, especially because you are bored or nervous:
Stop fiddling, will you!
I sat and fiddled at the computer for a while.
She was at her desk in the living room, fiddling with a deck of cards.
2 [transitive] British English informalSCC
to give false information about something, in order to avoid paying money or to get extra money:
Bert had been fiddling his income tax for years.
fiddle the books (=give false figures in a company's financial records)
to play a violin
fiddle aroundphrasal verb
fiddle around with somethingphrasal verb
to move the parts of a machine in order to try to make it work or repair it:
I've been fiddling around with this old car for months but I still can't get it to work.
to make small unnecessary changes to something - used to show disapproval [= mess around with]:
Why did you let her fiddle about with the remote control?
The bus company is always fiddling around with the schedules.
fiddle with somethingphrasal verb
to move part of a machine in order to make it work, without knowing exactly what you should do:
After fiddling with the tuning I finally got JFM.
to move or touch something that does not belong to you, in an annoying way:
Don't let him fiddle with my bag.