Princeton's WordNet

1. violin, fiddle(verb)

   bowed stringed instrument that is the highest member of the violin family; this instrument has four strings and a hollow body and an unfretted fingerboard and is played with a bow

   Synonyms:
   fiddle, violin

2. fiddle, shirk, shrink from, goldbrick(verb)

   avoid (one's assigned duties)

   Synonyms:
   monkey, shirk, con, play, rook, tinker, bunco, swindle, shrink from, toy, tamper, nobble, gyp, goldbrick, victimize, scam, fiddle, hornswoggle, diddle, gip, short-change, defraud, mulct

3. fiddle(verb)

   commit fraud and steal from one's employer

   Synonyms:
   play, monkey, shirk, goldbrick, tamper, shrink from, toy, diddle, tinker

4. fiddle(verb)

   play the violin or fiddle

   Synonyms:
   play, monkey, shirk, goldbrick, tamper, shrink from, toy, diddle, tinker

5. fiddle(verb)

   play on a violin

   Synonyms:
   play, monkey, shirk, goldbrick, tamper, shrink from, toy, diddle, tinker

6. toy, fiddle, diddle, play(verb)

   manipulate manually or in one's mind or imagination

   Synonyms:
   rook, swindle, fiddle, bet, spiel, act, victimize, bring, gip, shirk, goldbrick, tamper, wager, run, con, flirt, trifle, diddle, monkey, meet, tinker, gyp, roleplay, dally, act as, toy, playact, encounter, make for, defraud, hornswoggle, play, represent, nobble, bunco, short-change, recreate, work, take on, scam, wreak, mulct, shrink from

7. tamper, fiddle, monkey(verb)

   play around with or alter or falsify, usually secretively or dishonestly

   Synonyms:
   shrink from, shirk, muck about, monkey, goldbrick, potter, play, monkey around, tinker, muck around, putter, toy, tamper, meddle, mess around, fiddle, diddle

8. tinker, fiddle(verb)

   try to fix or mend

   Synonyms:
   play, fiddle, shirk, muck around, goldbrick, monkey, shrink from, tinker, muck about, monkey around, putter, toy, mess around, diddle, potter, tamper