Fiddled (5)
I believe the answer is:
toyed
'fiddled' is the definition.
('toy' can be a synonym of 'fiddle')
This is the entire clue.
(Other definitions for toyed that I've seen before include "Trifled (with someone's affections)" , "Played" , "Acted idly" , "Engaged in an activity, but not seriously" , "fiddled" .)