trivial in WordNet English dictionary

1. (informal) small and of little importance
   "a fiddling sum of money"; "a footling gesture"; "our worries are lilliputian compared with those of countries that are at war"; "a little (or small) matter"; "a dispute over niggling details"; "limited to petty enterprises"; "piffling efforts"; "giving a police officer a free meal may be against the law, but it seems to be a picayune infraction"
   fiddling  footling  lilliputian  little  niggling  piddling  piffling  petty  picayune  trivial 
   
2. of little substance or significance
   "a few superficial editorial changes"; "only trivial objections"
   superficial  trivial 
   
3. concerned with trivialities
   "a trivial young woman"; "a trivial mind"
   trivial