128 entries under cool topic. ×

4
mellow(adjective, calm, relaxed, indifferent)
4
poker-faced(adjective, indifferent, detached, blank)
4
steady(adjective, calm, unflappable, unexcitable)
3
dry(adjective, cold, dead, blank)
3
informal(adjective, mild, relaxed, tolerant)
3
matter-of-fact(adjective, cold, dead, blank)
3
neglectful(adjective, calm, careless, relaxed)
3
nerveless(adjective, calm, steady, unaffected)
3
trifling(adjective, calm, relaxed, casual)
2
breezy(adjective, feature, state, calm)
2
complacent(adjective, calm, mild, relaxed)
2
cursory(adjective, careless, relaxed, indifferent)
2
inexcitable(adjective, blank, aloof, unemotional)
2
laid back(expression, adjective, feature, state, calm)
2
loose(adjective, calm, relaxed, indifferent)
2
quiet(adjective, feature, state, calm)
2
remote(adjective, informal, relaxed, easygoing)
2
self-possessed(adjective, calm, quiet, mild)
2
sophisticated(adjective, indifferent, apathetic)
2
spiritless(adjective, blank, aloof, unemotional)
10 years ago|19k views|share |citing 
APASmart Define. (2015). nonchalant thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/nonchalant/thesaurus/synonyms
ChicagoSmart Define. 2015. "nonchalant thesaurus" https://smartdefine.org/nonchalant/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, nonchalant thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/nonchalant/thesaurus/synonyms>.
MLASmart Define. "nonchalant thesaurus" 9 December 2015. Web. 26 September 2026. <https://smartdefine.org/nonchalant/thesaurus/synonyms>