63 entries under hardened topic. ×

14
insensitive(noun, adjective, dull, hard, slow)
6
impassive(adjective, dull, hard, slow, stupid)
6
insensible(adjective, hard, innocent, unfeeling, unsympathetic)
6
thick-skinned(noun, adjective, hard, indifferent, unfeeling)
5
apathetic(adjective, dull, hard, unfeeling, unsympathetic)
4
unfeeling(noun, adjective, hard, indifferent, unsympathetic)
4
benumbed(adjective, dull, hard, unfeeling, unsympathetic)
4
callous(noun, adjective, hard, indifferent, unfeeling)
4
coldhearted(adjective, hard, indifferent, aloof, unfeeling)
4
heartless(adjective, hard, indifferent, aloof, unfeeling)
4
unemotional(adjective, dull, hard, unfeeling, unsympathetic)
4
unresponsive(adjective, dull, hard, simple, indifferent)
3
hard(adjective, obscure, difficult, indifferent, unfeeling)
3
insensate(noun, adjective, dull, hard, simple)
3
torpid(adjective, dull, hard, slow, stupid)
3
unsusceptible(noun, adjective, hard, indifferent, unfeeling)
2
cold(adjective, hard, unfeeling, unsympathetic)
2
cold-blooded(adjective, hard, unfeeling, unsympathetic)
2
impenetrable(adjective, hard, unfeeling, unsympathetic, prepared)
2
indifferent(adjective, dull, hard, unfeeling, unsympathetic)
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APASmart Define. (2015). obtuse thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/obtuse/thesaurus/synonyms
ChicagoSmart Define. 2015. "obtuse thesaurus" https://smartdefine.org/obtuse/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, obtuse thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/obtuse/thesaurus/synonyms>.
MLASmart Define. "obtuse thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/obtuse/thesaurus/synonyms>