trifle in WordNet English dictionary

1. consider not very seriously
   "He is trifling with her"; "She plays with the thought of moving to Tasmania"
   dally  trifle  play 
   
2. act frivolously
   frivol  trifle 
   
3. waste time; spend one's time idly or inefficiently
   piddle  wanton  wanton away  piddle away  trifle 
   

1. something of small importance
   triviality  trivia  trifle  small beer 
   
2. a detail that is considered insignificant
   technicality  trifle  triviality 
   
3. a cold pudding made of layers of sponge cake spread with fruit or jelly; may be decorated with nuts, cream, or chocolate
   trifle