69 entries under nonchalant topic. ×

24
apathetic(adjective, calm, dull, cool, weak)
23
indifferent(adjective, calm, dull, cool, weak)
19
unconcerned(adjective, calm, dull, cool, weak)
18
phlegmatic(adjective, dull, quiet, weak, easy)
14
insouciant(adjective, calm, dull, cool, relaxed)
12
cool(adjective, calm, temper, relaxed, cold)
11
lukewarm(adjective, calm, cool, temper, relaxed)
11
pococurante(adjective, temper, informal, relaxed, cold)
11
uninterested(adjective, dull, weak, easy, slow)
9
cold(adjective, calm, cool, temper, relaxed)
9
impassive(adjective, calm, dull, cool, weak)
8
careless(adjective, calm, dull, cool, relaxed)
8
supine(adjective, dull, quiet, weak, easy)
8
unmoved(adjective, dull, flat, low, sad)
7
casual(adjective, calm, cool, relaxed, cheerful)
7
dispassionate(adjective, calm, cool, relaxed, indifferent)
7
inattentive(adjective, dull, careless, indifferent, idle)
6
easy(adjective, calm, dull, quiet, cool)
6
easygoing(adjective, calm, dull, cool, careless)
6
insensible(adjective, temper, cold, indifferent, negative)
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APASmart Define. (2016). lackadaisical thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/lackadaisical/thesaurus/synonyms
ChicagoSmart Define. 2016. "lackadaisical thesaurus" https://smartdefine.org/lackadaisical/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, lackadaisical thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/lackadaisical/thesaurus/synonyms>.
MLASmart Define. "lackadaisical thesaurus" 2 March 2016. Web. 29 September 2026. <https://smartdefine.org/lackadaisical/thesaurus/synonyms>