0
constitutive
0
contemplative
0
controlling
0
cool as cucumber(expression, idiom, loud)
0
core
0
costly
0
crack
0
crushing
0
dangerous
0
darkness
0
deciding
0
deep(adjective, meaning, abstract)
0
deepest
0
detectable
0
devastating
0
difficult
0
diligent
0
dimness
0
disheartened
0
distinctive
11 years ago|5.3k views|share |citing 
APASmart Define. (2015). frivolous thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/frivolous/thesaurus/antonyms
ChicagoSmart Define. 2015. "frivolous thesaurus" https://smartdefine.org/frivolous/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2015, frivolous thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/frivolous/thesaurus/antonyms>.
MLASmart Define. "frivolous thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/frivolous/thesaurus/antonyms>