154 entries under cool topic. ×

15
serene(adjective, calm, quiet, moderate)
14
cold(adjective, calm, hard, tough)
14
detached(adjective, calm, quiet, moderate)
14
unfeeling(adjective, calm, hard, tough)
13
frigid(adjective, calm, temper, cold)
13
placid(adjective, calm, quiet, moderate)
13
poker-faced(adjective, calm, dull, indifferent)
12
cold-blooded(adjective, calm, hard, tough)
12
sedate(adjective, calm, quiet, moderate)
12
stoical(adjective, calm, cold, indifferent)
12
tranquil(adjective, calm, quiet, relaxed)
11
disinterested(adjective, calm, quiet, moderate)
11
peaceful(adjective, quiet, still, tranquil)
11
unflappable(adjective, calm, quiet, moderate)
10
blank(adjective, indifferent, detached, sober)
10
dry(adjective, calm, dull, tough)
10
passionless(adjective, calm, dull, slow)
9
incurious(adjective, calm, hard, relaxed)
9
lackadaisical(adjective, calm, dull, weak)
9
reserved(adjective, calm, indifferent, restrained)
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APASmart Define. (2015). impassive thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/impassive/thesaurus/synonyms
ChicagoSmart Define. 2015. "impassive thesaurus" https://smartdefine.org/impassive/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, impassive thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/impassive/thesaurus/synonyms>.
MLASmart Define. "impassive thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/impassive/thesaurus/synonyms>