Nouns

(n)triflea cold pudding made of layers of sponge cake spread with fruit or jelly; may be decorated with nuts, cream, or chocolate
(n)trifle, trivialitya detail that is considered insignificant
(n)triviality, trivia, trifle, small beersomething of small importance

Verbs

(v)piddle, wanton, wanton away, piddle away, triflewaste time; spend one's time idly or inefficiently
(v)frivol, trifleact frivolously
(v)dally, trifle, playconsider not very seriously“He is trifling with her”, “She plays with the thought of moving to Tasmania”