63 entries under undemonstrative topic. ×

10
heartless(adjective, person, mean, hard, cool)
10
insensitive(adjective, person, mean, hard, cool)
8
coldhearted(adjective, person, mean, harsh, cold)
8
emotionless(adjective, calm, dull, flat, detached)
8
impersonal(adjective, cool, temper, cold, negative)
7
hard-hearted(adjective, person, feelings, detached, impassive)
6
listless(adjective, calm, dull, flat, temper)
5
phlegmatic(adjective, calm, restrained, detached, impassive)
5
poker-faced(adjective, detached, unfeeling, impassive, unresponsive)
5
reticent(adjective, close, quiet, cool, gentle)
5
unexcitable(adjective, calm, dull, flat, detached)
4
deadpan(adjective, calm, dull, cool, flat)
4
composed(adjective, calm, close, quiet, gentle)
4
flat(adjective, calm, dull, cool, cold)
4
obdurate(adjective, mean, hard, cool, harsh)
4
thick-skinned(adjective, cool, detached, blank, sober)
4
unimpassioned(adjective, cool, detached, blank, sober)
3
matter-of-fact(adjective, calm, cool, cold, detached)
3
toneless(adjective, cool, temper, cold, negative)
2
blank(adjective, cool, detached, sober, unfeeling)
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APASmart Define. (2016). frigid thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/frigid/thesaurus/synonyms
ChicagoSmart Define. 2016. "frigid thesaurus" https://smartdefine.org/frigid/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, frigid thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/frigid/thesaurus/synonyms>.
MLASmart Define. "frigid thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/frigid/thesaurus/synonyms>