- Definitions|1
- Thesaurus|1.1k
- Abbreviations|0
42 entries under noun topic. ×
| flippancy | |
| frivolity(silliness, childishness) | |
| insincerity | |
| levity(gravity, silliness, funniness) | |
| cheerfulness | |
| folly(care, idea, nonsense) | |
| frivolousness | |
| funniness | |
| insignificance | |
| joviality | |
| lightness | |
| cheer(happiness, sorrow, sadness) | |
| humor(comedy, insincerity, funniness) | |
| jollity | |
| lightheartedness | |
| sport(sadness, fun, joking) | |
| triviality | |
| wit | |
| giddiness | |
| mockery(honesty, joke, parody) |
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| APA | Smart Define. (2015). seriousness thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/seriousness/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "seriousness thesaurus" https://smartdefine.org/seriousness/thesaurus/antonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2015, seriousness thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/seriousness/thesaurus/antonyms>. |
| MLA | Smart Define. "seriousness thesaurus" 23 December 2015. Web. 30 September 2026. <https://smartdefine.org/seriousness/thesaurus/antonyms> |