100 entries under cool topic. ×

5
impassive(adjective, dull, quiet, moderate)
4
calm(adjective, quiet, still, peaceful)
3
nonchalant(adjective, blank, aloof, unemotional)
3
poker-faced(adjective, dull, dead, blank)
2
aloof(adjective, quiet, moderate, gentle)
2
apathetic(adjective, blank, aloof, unemotional)
2
cold-blooded(adjective, blank, aloof, unemotional)
2
composed(adjective, quiet, moderate, gentle)
2
detached(adjective, quiet, moderate, gentle)
2
dispassionate(adjective, quiet, moderate, gentle)
2
imperturbable(adjective, quiet, moderate, gentle)
2
mild(adjective, quiet, still, peaceful)
2
moderate(adjective, quiet, gentle, relaxed)
2
neutral(adjective, quiet, moderate, gentle)
2
passionless(adjective, blank, aloof, unemotional)
2
placid(adjective, quiet, moderate, gentle)
2
reserved(adjective, blank, aloof, unemotional)
2
serene(adjective, quiet, moderate, gentle)
2
stoic(adjective, blank, aloof, unemotional)
2
stoical(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>