360 entries under adjective topic. ×

5
unexcitable(calm, dull, flat, detached)
5
unflappable(calm, unemotional, composed, unexcitable)
5
unforthcoming(person, feelings)
5
vindictive(person, unwarmhearted)
4
deadpan(calm, dull, cool, flat)
4
backward(person, quiet, gentle, feelings)
4
composed(calm, close, quiet, gentle)
4
disagreeable(negative, bad behavior)
4
flat(calm, dull, cool, cold)
4
guarded
4
hibernal
4
hiemal(cool, severe, keen, sharp)
4
inclement(cool, severe, keen, sharp)
4
inert(flat, cold, dead, apathy)
4
inscrutable
4
lifeless(calm, dull, cool, flat)
4
mild(close, quiet, gentle, restrained)
4
obdurate(mean, hard, cool, harsh)
4
pitiless(hard, care, heartless, merciless)
4
placid(calm, quiet, gentle, aloof)
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APASmart Define. (2016). frigid thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/frigid/thesaurus/synonyms
ChicagoSmart Define. 2016. "frigid thesaurus" https://smartdefine.org/frigid/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, frigid thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/frigid/thesaurus/synonyms>.
MLASmart Define. "frigid thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/frigid/thesaurus/synonyms>