13
insensible(adjective, quiet, bad, temper, cold)
11
impassive(adjective, hard, temper, cold, indifferent)
10
callous(adjective, quiet, bad, cold, indifferent)
9
apathetic(adjective, quiet, temper, cold, negative)
9
insensitive(adjective, quiet, bad, hard, temper)
8
out of touch(expression, idiom)
8
stoic(adjective, cool, cold, indifferent, unemotional)
7
insensate(adjective, bad, cold, aloof, no feelings)
7
insusceptible(adjective, hard, affect, dead, impassive)
7
unconcerned(adjective, temper, cold, negative, aloof)
7
unfeeling(adjective, bad, cold, aloof, insensibility)
6
indifferent(adjective, quiet, temper, cold, negative)
6
unmoved(adjective, temper, cold, negative, impassive)
6
unsusceptible(adjective, hard, affect, dead, impassive)
5
cold-blooded(adjective, bad, temper, cold, negative)
5
cool(adjective, temper, cold, negative, behave)
5
passionless(adjective, dull, quiet, flat, heavy)
4
cold(adjective, temper, negative, behave)
4
dull(adjective, quiet, flat, heavy, dead)
4
heartless(hard, insensitive, insensibility, unsusceptible)
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APASmart Define. (2015). impassible thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/impassible/thesaurus/synonyms
ChicagoSmart Define. 2015. "impassible thesaurus" https://smartdefine.org/impassible/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, impassible thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/impassible/thesaurus/synonyms>.
MLASmart Define. "impassible thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/impassible/thesaurus/synonyms>