100 entries under cool topic. ×

2
stolid(adjective, dull, dead, blank)
2
tranquil(adjective, quiet, still, peaceful)
2
unexcitable(adjective, quiet, moderate, gentle)
2
unflappable(adjective, quiet, moderate, gentle)
1
amiable(adjective, quiet, moderate, gentle)
1
amicable(adjective, quiet, moderate, gentle)
1
callous(adjective, blank, aloof, unemotional)
1
civil(adjective, quiet, moderate, gentle)
1
cold(adjective, blank, aloof, unemotional)
1
collected(adjective, quiet, moderate, gentle)
1
cool-headed(adjective, quiet, moderate, gentle)
1
cool as cucumber(expression, adjective, idiom, quiet)
1
disinterested(adjective, quiet, moderate, gentle)
1
dry(adjective, blank, aloof, unemotional)
1
emotionless(adjective, blank, aloof, unemotional)
1
equable(adjective, quiet, moderate, gentle)
1
hardened(adjective, blank, aloof, unemotional)
1
heartless(adjective, blank, aloof, unemotional)
1
indurated(adjective, blank, aloof, unemotional)
1
inexcitable(adjective, blank, aloof, unemotional)
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APASmart Define. (2015). inscrutable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/inscrutable/thesaurus/synonyms
ChicagoSmart Define. 2015. "inscrutable thesaurus" https://smartdefine.org/inscrutable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, inscrutable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/inscrutable/thesaurus/synonyms>.
MLASmart Define. "inscrutable thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/inscrutable/thesaurus/synonyms>