17 entries under expression topic. ×

13
frivolous(adjective, feature, state, characteristic)
13
light-hearted(adjective, feature, person, trait)
9
thoughtless(adjective, feature, characteristic, person)
8
giddy(adjective, feature, state, characteristic)
8
foolish(adjective, feature, state, characteristic)
6
light(adjective, feature, state, characteristic)
5
flippant(adjective, feature, state, characteristic)
4
uninterested(adjective, feature, person, trait)
4
flighty(adjective, feature, state, characteristic)
4
lightsome(adjective, feature, person, trait)
4
trivial(adjective, feature, state, characteristic)
3
superficial(adjective, feature, state, characteristic)
2
shallow(adjective, feature, state, characteristic)
2
offhand(adjective, feature, person, trait)
1
jocular(adjective, feature, person, trait)
1
disparaging(adjective, feature, person, trait)
-3
tongue in cheek(adjective, idiom)
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APASmart Define. (2015). unserious thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unserious/thesaurus/synonyms
ChicagoSmart Define. 2015. "unserious thesaurus" https://smartdefine.org/unserious/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, unserious thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unserious/thesaurus/synonyms>.
MLASmart Define. "unserious thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/unserious/thesaurus/synonyms>