64 entries under nonchalant topic. ×

24
careless(adjective, feature, state, weak, relaxed)
21
blithe(adjective, feature, state, feeling, easy)
19
insouciant(adjective, feature, state, calm, keen)
17
unworried(adjective, feature, state, calm, quiet)
16
unconcerned(adjective, feature, state, calm, mild)
15
lighthearted(adjective, feature, state, feeling, easy)
14
serene(adjective, feature, state, calm, quiet)
13
relaxed(adjective, feature, state, calm, quiet)
11
happy(adjective, feature, state, keen, bright)
10
cheerful(adjective, feature, state, pleasant, easy)
9
untroubled(adjective, feature, state, calm, quiet)
8
easy(adjective, feature, state, calm, strong)
7
merry(adjective, feature, state, feeling, keen)
6
jaunty(adjective, feature, state, easy, bright)
6
apathetic(adjective, indifferent, undisturbed, undaunted)
5
gay(adjective, feature, state, feeling, easy)
5
cheery(adjective, feature, state, keen, bright)
5
cool(adjective, feature, state, calm, informal)
4
feckless(adjective, feature, state, careless, indifferent)
4
vivacious(adjective, feature, state, pleasant, easy)
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APASmart Define. (2016). carefree thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/carefree/thesaurus/synonyms
ChicagoSmart Define. 2016. "carefree thesaurus" https://smartdefine.org/carefree/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, carefree thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/carefree/thesaurus/synonyms>.
MLASmart Define. "carefree thesaurus" 26 February 2016. Web. 29 September 2026. <https://smartdefine.org/carefree/thesaurus/synonyms>