50 entries under unresponsive topic. ×

4
coldhearted(adjective, hard, indifferent, aloof, unfeeling)
4
heartless(adjective, hard, indifferent, aloof, unfeeling)
4
inert(adjective, dull, heavy, stupid, impassive)
4
unemotional(adjective, dull, hard, unfeeling, unsympathetic)
3
hard(adjective, obscure, difficult, indifferent, unfeeling)
3
inactive(adjective, dull, heavy, stupid, impassive)
3
tactless(adjective, hard, indifferent, vulgar, thoughtless)
3
unsusceptible(noun, adjective, hard, indifferent, unfeeling)
2
hardened(noun, adjective, hard, indifferent, unfeeling)
2
indifferent(adjective, dull, hard, unfeeling, unsympathetic)
2
phlegmatic(adjective, dull, slow, stupid, impassive)
2
supine(adjective, dull, heavy, stupid, impassive)
1
hard-boiled(noun, adjective, hard, indifferent, unfeeling)
1
hard as nails(expression, adjective, idiom, hard, indifferent)
1
hardhearted(adjective, hard, indifferent, unfeeling, unsympathetic)
1
impervious(noun, adjective, oblivious, unmoved)
1
oblivious(adjective, silly, foolish, innocent, senseless)
1
stony(adjective, hard, indifferent, unfeeling, unsympathetic)
1
tough(noun, adjective, hard, indifferent, unfeeling)
1
unconcerned(adjective, hard, indifferent, 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>