76 entries under hard topic. ×

7
unimpressionable(adjective, careless, indifferent, cruel)
7
unsusceptible(adjective, careless, indifferent, cruel)
7
unsympathetic(adjective, careless, indifferent, cruel)
6
insentient(adjective, careless, cold, indifferent)
6
obtuse(adjective, dull, slow, stupid)
5
soulless(adjective, careless, indifferent, cruel)
4
coldhearted(adjective, dull, slow, detached)
3
hardened(adjective, cool, careless, indifferent)
3
indurated(adjective, cool, careless, indifferent)
3
insensate(adjective, careless, cold, indifferent)
3
thick-skinned(adjective, calm, cool, careless)
2
bloodless(adjective, unfeeling, unemotional, insensitive)
2
careless(adjective, calm, dull, cool)
2
inaccessible(adjective, unfeeling, unsympathetic, hardened)
2
stiff(adjective, dull, careless, indifferent)
2
torpid(adjective, dull, weak, easy)
2
uncompassionate(adjective, calm, careless, indifferent)
1
blind to(verb, expression, adjective, phrasal verb)
1
case-hardened(adjective, careless, indifferent, cruel)
1
cruel(adjective, careless, indifferent, apathetic)
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APASmart Define. (2015). impassive thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/impassive/thesaurus/synonyms
ChicagoSmart Define. 2015. "impassive thesaurus" https://smartdefine.org/impassive/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, impassive thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/impassive/thesaurus/synonyms>.
MLASmart Define. "impassive thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/impassive/thesaurus/synonyms>