74 entries under hard topic. ×

2
coldhearted(adjective, indifferent, unfeeling, unsympathetic)
2
hardened(noun, adjective, careless, indifferent)
2
impenetrable(adjective, unfeeling, unsympathetic, hardened)
2
indifferent(adjective, careless, cold, cruel)
2
insentient(adjective, careless, indifferent, cruel)
2
unemotional(adjective, unfeeling, unsympathetic, hardened)
2
unsympathetic(adjective, careless, indifferent, cruel)
1
aloof(adjective, indifferent, unkind, unresponsive)
1
benumbed(adjective, dead, unfeeling, unsympathetic)
1
blind to(verb, expression, adjective, phrasal verb)
1
bloodless(adjective, indifferent, unkind, unresponsive)
1
careless(adjective, indifferent, cruel, apathetic)
1
case-hardened(noun, adjective, careless, indifferent)
1
deaf to(verb, expression, adjective, phrasal verb)
1
feelingless(adjective, indifferent, unkind, unresponsive)
1
hard-bitten(adjective, careless, indifferent, cruel)
1
hard-boiled(noun, adjective, careless, indifferent)
1
hard as nails(expression, adjective, idiom, indifferent)
1
hardhearted(adjective, careless, indifferent, cruel)
1
impenitent(adjective, careless, indifferent, cruel)
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APASmart Define. (2015). unsusceptible thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unsusceptible/thesaurus/synonyms
ChicagoSmart Define. 2015. "unsusceptible thesaurus" https://smartdefine.org/unsusceptible/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, unsusceptible thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unsusceptible/thesaurus/synonyms>.
MLASmart Define. "unsusceptible thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/unsusceptible/thesaurus/synonyms>