Synonyms|190Antonyms|44|Broader|1Narrower|5Related|93
3
earnestness
3
seriousness
2
gravity
2
sincerity
2
solemnity
1
dignity
1
graveness
1
sadness(noun, work)
1
serious-mindedness
1
soberness
1
solemnness
0
dejection
0
depression
0
despondency
0
dispiritedness
0
downheartedness
0
enormity
0
gloom
0
gloominess
0
heartsickness
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APASmart Define. (2015). frivolousness thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/frivolousness/thesaurus/antonyms
ChicagoSmart Define. 2015. "frivolousness thesaurus" https://smartdefine.org/frivolousness/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2015, frivolousness thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/frivolousness/thesaurus/antonyms>.
MLASmart Define. "frivolousness thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/frivolousness/thesaurus/antonyms>