27 entries under hard topic. ×

8
insensitive(adjective, dull, careless, indifferent)
7
obtuse(adjective, obscure, difficult, slow)
4
unfeeling(adjective, indifferent, unkind, unresponsive)
3
opaque(adjective, dull, obscure, difficult)
3
thick-skinned(adjective, indifferent, unkind, unresponsive)
2
hardened(adjective, indifferent, unkind, unresponsive)
2
unresponsive(adjective, indifferent, unkind, insensitive)
1
aloof(adjective, indifferent, unkind, unresponsive)
1
bloodless(adjective, indifferent, unkind, unresponsive)
1
coldhearted(adjective, indifferent, unkind, unresponsive)
1
feelingless(adjective, indifferent, unkind, unresponsive)
1
hard as nails(expression, adjective, idiom, indifferent)
1
hardhearted(adjective, indifferent, unkind, unresponsive)
1
incurious(adjective, indifferent, unkind, unresponsive)
1
insusceptible(adjective, insensitive, unsusceptible)
1
stony(adjective, indifferent, unkind, unresponsive)
1
tactless(adjective, indifferent, unkind, unresponsive)
1
tough(adjective, indifferent, unkind, unresponsive)
1
unconcerned(adjective, indifferent, unkind, unresponsive)
1
unsusceptible(adjective, indifferent, unkind, unresponsive)
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APASmart Define. (2015). imperceptive thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/imperceptive/thesaurus/synonyms
ChicagoSmart Define. 2015. "imperceptive thesaurus" https://smartdefine.org/imperceptive/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, imperceptive thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/imperceptive/thesaurus/synonyms>.
MLASmart Define. "imperceptive thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/imperceptive/thesaurus/synonyms>