60 entries under unconcerned topic. ×

8
unworried(adjective, feature, state, care, indifferent)
5
distant(adjective, indifferent, detached, aloof, apathetic)
4
impartial(adjective, indifferent, detached, aloof, distant)
4
lighthearted(adjective, feature, state, trait, cheerful)
4
poker-faced(adjective, cool, indifferent, detached, blank)
3
jaunty(adjective, feature, state, trait, cheerful)
2
buoyant(adjective, feature, state, trait, cheerful)
2
inconsiderate(adjective, careless, indifferent, casual)
2
slapdash(adjective, careless, indifferent, casual)
2
uninvolved(adjective, indifferent, detached, aloof, distant)
1
bystanding(detached, impartial, unbiased, removed)
1
clinical(adjective, indifferent, detached, aloof)
1
disengaged(detached, impartial, unbiased, removed)
1
inactive(detached, impartial, unbiased, removed)
1
inadvertent(adjective, careless, indifferent, casual)
1
middle-of-road(detached, impartial, unbiased, removed)
1
nonaligned(adjective, detached, neutral, impartial)
1
nonbelligerent(detached, impartial, unbiased, removed)
1
noncombatant(detached, impartial, unbiased, removed)
1
nonparticipating(detached, impartial, unbiased, removed)
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APASmart Define. (2015). nonchalant thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/nonchalant/thesaurus/synonyms
ChicagoSmart Define. 2015. "nonchalant thesaurus" https://smartdefine.org/nonchalant/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, nonchalant thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/nonchalant/thesaurus/synonyms>.
MLASmart Define. "nonchalant thesaurus" 9 December 2015. Web. 29 September 2026. <https://smartdefine.org/nonchalant/thesaurus/synonyms>