68 entries under inattentive topic. ×

10
unperturbed(adjective, calm, quiet, cool, relaxed)
10
unruffled(adjective, calm, cool, relaxed, indifferent)
8
blithe(adjective, feature, state, care, indifferent)
8
insensitive(adjective, temper, cold, indifferent, negative)
8
offhand(adjective, calm, cool, mild, careless)
8
unworried(adjective, feature, state, care, indifferent)
7
insensible(adjective, cool, temper, cold, indifferent)
7
phlegmatic(adjective, calm, quiet, cool, relaxed)
7
unmindful(adjective, careless, indifferent, casual, sloppy)
7
unmoved(adjective, calm, cool, temper, cold)
6
incurious(adjective, calm, cool, careless, relaxed)
6
thoughtless(adjective, feature, state, careless, indifferent)
5
callous(adjective, cool, indifferent, detached, blank)
5
distant(adjective, indifferent, detached, aloof, apathetic)
5
reserved(adjective, cool, indifferent, blank, aloof)
5
stony(adjective, indifferent, unsympathetic, insensitive)
5
unsympathetic(adjective, indifferent, detached, distant, apathetic)
4
feckless(adjective, feature, state, indifferent, trait)
4
hardened(adjective, cool, indifferent, blank, aloof)
4
supine(adjective, cold, indifferent, dead, unsympathetic)
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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>