10
stony(adjective, person, mean, hard, cool)
9
cold-blooded(adjective, person, mean, bad, hard)
9
dead(adjective, quiet, cool, flat, slow)
9
dispassionate(adjective, calm, dull, flat, cold)
9
listless(adjective, calm, dull, quiet, flat)
9
passive(adjective, calm, dull, cool, flat)
9
phlegmatic(adjective, calm, dull, cool, slow)
9
reserved(adjective, calm, cool, indifferent, restrained)
9
undemonstrative(adjective, calm, dull, quiet, cool)
8
chill(adjective, bad, cold, indifferent, restrained)
8
emotionless(adjective, calm, dull, bad, flat)
8
icy(adjective, mean, hard, cool, unpleasant)
8
pigeon-livered(adjective, calm, quiet, humble, shy)
8
unenthusiastic(adjective, calm, cool, indifferent, restrained)
8
unfriendly(adjective, cold, indifferent, restrained, detached)
7
distant(adjective, cool, cold, indifferent, restrained)
7
dumb(adjective, calm, quiet, humble, shy)
7
heartless(adjective, mean, hard, cool, unpleasant)
7
impervious(adjective, calm, bad, cold, indifferent)
7
lukewarm(adjective, calm, mean, hard, cool)
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APASmart Define. (2016). unresponsive thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/unresponsive/thesaurus/synonyms
ChicagoSmart Define. 2016. "unresponsive thesaurus" https://smartdefine.org/unresponsive/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, unresponsive thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/unresponsive/thesaurus/synonyms>.
MLASmart Define. "unresponsive thesaurus" 31 March 2016. Web. 21 September 2026. <https://smartdefine.org/unresponsive/thesaurus/synonyms>