Adjective trivial has 5 senses
  1. fiddling, footling, lilliputian, little, Mickey Mouse, niggling, piddling, piffling, petty, picayune, trivial - (informal terms) 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"; "Mickey Mouse regulations"; "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"
    Antonyms: important, of import (indirect, via unimportant)
  2. banal, commonplace, trivial - obvious and dull; "trivial conversation"; "commonplace prose"
    Antonym: extraordinary (indirect, via ordinary)
  3. superficial, trivial - of little substance or significance; "a few superficial editorial changes"; "only trivial objections"
    Antonyms: significant, important (indirect, via insignificant)
  4. trivial - concerned with trivialities; "a trivial young woman"; "a trivial mind"
    serious (indirect, via frivolous)
  5. insignificant, trivial - not large enough to consider or notice
    Antonym: considerable (indirect, via inconsiderable)