21 entries under hard topic. ×

11
impassive(adjective, temper, cold, indifferent)
9
insensitive(adjective, quiet, bad, temper)
7
insusceptible(adjective, affect, dead, impassive)
6
unsusceptible(adjective, affect, dead, impassive)
4
heartless(insensitive, insensibility, unsusceptible)
4
unimpressionable(adjective, affect, dead, impassive)
4
unresponsive(adjective, quiet, bad, cold)
3
bloodless(adjective, difficult, troubled, inflexible)
3
thick-skinned(adjective, insensitive, unsusceptible)
2
coldhearted(adjective, insensitive, unsusceptible)
2
obtuse(insensitive, unsusceptible)
0
crass(insensitive, unsusceptible)
0
feelingless(adjective, impassive, insensitive, unsusceptible)
0
hard as nails(expression, adjective, idiom, impassive)
0
hardened(insensitive, unsusceptible)
0
hardhearted(insensitive, unsusceptible)
0
imperceptive(adjective, impassive, insensitive, unsusceptible)
0
incurious(insensitive, unsusceptible)
0
stony(cold, indifferent, insensitive, unyielding)
0
tactless(insensitive, unsusceptible)
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APASmart Define. (2015). impassible thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/impassible/thesaurus/synonyms
ChicagoSmart Define. 2015. "impassible thesaurus" https://smartdefine.org/impassible/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, impassible thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/impassible/thesaurus/synonyms>.
MLASmart Define. "impassible thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/impassible/thesaurus/synonyms>