145 entries under indifferent topic. ×

5
unsympathetic(adjective, detached, distant, apathetic)
4
feckless(adjective, feature, state, trait)
4
glib(adjective, casual)
4
hardened(adjective, cool, blank, aloof)
4
impartial(adjective, detached, aloof, distant)
4
mellow(adjective, calm, cool, relaxed)
4
poker-faced(adjective, cool, detached, blank)
4
supine(adjective, cold, dead, unsympathetic)
3
lax(adjective, feature, state, careless)
3
neglectful(adjective, calm, cool, careless, relaxed)
3
unresponsive(adjective, cold, detached, dead)
3
unwilling
2
breezy(adjective, feature, state, calm, cool)
2
cavalier(adjective, careless, casual, easygoing)
2
cursory(adjective, cool, careless, relaxed)
2
disregardful(adjective, careless, casual, thoughtless)
2
inconsiderate(adjective, careless, casual, unconcerned)
2
loose(adjective, calm, cool, relaxed)
2
regardless(adjective, careless, detached, casual)
2
slack(adjective, careless, sloppy, inattentive)
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APASmart Define. (2015). nonchalant thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/nonchalant/thesaurus/synonyms
ChicagoSmart Define. 2015. "nonchalant thesaurus" https://smartdefine.org/nonchalant/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, nonchalant thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/nonchalant/thesaurus/synonyms>.
MLASmart Define. "nonchalant thesaurus" 9 December 2015. Web. 28 September 2026. <https://smartdefine.org/nonchalant/thesaurus/synonyms>