2
not serious(expression, adjective, pleasant, smart, silly)
2
one-dimensional(adjective, slight, detail, silly, trivial)
2
pleasing(adjective, amusing)
2
promiscuous(wild, reckless, debauched)
2
rattle-brained
2
relaxing(adjective, amusing)
2
rollicking(adjective, amusing)
2
sleeveless(caprice, imbecility folly)
2
sportive(adjective, pleasant, wild, silly, trivial)
2
stimulating(adjective, amusing)
2
tongue-in-cheek(adjective, silly, trivial)
2
twopenny
2
undependable(adjective, excited, unreliable, changeable, fearful)
2
unfaithful(adjective, changeable, untrue, indecisive, inconsistent)
2
unreasonable(poor, stupid, chance, absurd, uninformed)
2
unreliable(adjective, excited, vague, changeable, fearful)
2
unsteady(adjective, careless, stupid, unreliable, changeable)
2
unsubstantial(weak, soft, gentle, content)
2
vacillating(adjective, changeable, untrue, unsteady, indecisive)
2
vapid
11 years ago|25k views|share |citing 
APASmart Define. (2015). frivolous thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/frivolous/thesaurus/synonyms
ChicagoSmart Define. 2015. "frivolous thesaurus" https://smartdefine.org/frivolous/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, frivolous thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/frivolous/thesaurus/synonyms>.
MLASmart Define. "frivolous thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/frivolous/thesaurus/synonyms>