35 entries under feature topic. ×

13
frivolous(expression, adjective, state, characteristic)
13
light-hearted(expression, adjective, person, trait)
11
unthinking(adjective, person, trait, thoughtfulness)
10
careless(adjective, person, trait, thoughtfulness)
9
thoughtless(expression, adjective, characteristic, person)
9
neglectful(adjective, person, trait, thoughtfulness)
8
giddy(expression, adjective, state, characteristic)
8
foolish(expression, adjective, state, characteristic)
8
heedless(adjective, person, trait, thoughtfulness)
7
incautious(adjective, person, trait, thoughtfulness)
7
mindless(adjective, person, trait, thoughtfulness)
7
scatterbrained(adjective, person, trait, thoughtfulness)
7
silly(adjective, person, trait, thoughtfulness)
6
light(expression, adjective, state, characteristic)
6
unheeding(adjective, person, trait, thoughtfulness)
6
unmindful(adjective, person, trait, thoughtfulness)
5
flippant(expression, adjective, state, characteristic)
5
imprudent(adjective, person, trait, thoughtfulness)
5
inattentive(adjective, person, trait, thoughtfulness)
4
uninterested(expression, adjective, person, trait)
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APASmart Define. (2015). unserious thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unserious/thesaurus/synonyms
ChicagoSmart Define. 2015. "unserious thesaurus" https://smartdefine.org/unserious/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, unserious thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unserious/thesaurus/synonyms>.
MLASmart Define. "unserious thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/unserious/thesaurus/synonyms>