I. verb
1.
to handle something nervously or absently
always fiddling with his tie
Synonyms: fidget, play, trifle, twiddle
Related Word: feel, handle, touch
2.
to work aimlessly, fruitlessly, or pointlessly
fiddled around with the engine for hours
Synonyms: doodle, mess, mess around, potter, puddle, putter, tinker
Related Word: dabble, fool, monkey
II. noun
Synonyms: imposture , cheat, fake, flam, flimflam, fraud, gyp, hoax, sham, swindle