123 entries under impassive topic. ×

4
unfeeling(adjective, cool, detached, unfriendly, blank)
3
deadpan(adjective, cool, detached, blank, sober)
3
low-key(adjective, calm, soft, reasonable, gentle)
3
thick-skinned(adjective, calm, cool, indifferent, restrained)
3
unconcerned(adjective, calm, cool, cold, indifferent)
3
unexcitable(adjective, cool, detached, blank, aloof)
3
unmoved(adjective, calm, cool, indifferent, restrained)
3
unruffled(adjective, calm, cool, sensible, indifferent)
2
blank(adjective, cool, detached, sober, unfeeling)
2
grave(adjective, calm, sensible, restrained, thoughtful)
2
hard-hearted(adjective, calm, person, indifferent, feelings)
2
insensitive(adjective, indifferent, detached, unsympathetic)
2
laid back(expression, adjective, person, cool, cold)
2
lukewarm(adjective, calm, cool, indifferent, restrained)
2
objective(adjective, indifferent, detached, casual, aloof)
2
phlegmatic(adjective, cool, indifferent, restrained, detached)
2
serious(adjective, calm, sensible, restrained, modest)
2
unimpassioned(adjective, calm, cool, reasonable, moderate)
1
abnegating(adjective, calm, sensible, dark, restrained)
1
along for the ride(expression, adjective, idiom, detached)
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APASmart Define. (2016). reserved thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/reserved/thesaurus/synonyms
ChicagoSmart Define. 2016. "reserved thesaurus" https://smartdefine.org/reserved/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, reserved thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/reserved/thesaurus/synonyms>.
MLASmart Define. "reserved thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/reserved/thesaurus/synonyms>