95 entries under hard topic. ×

7
unaffected(adjective, careless, cold, indifferent)
7
uncaring(adjective, mean, bad, cool)
6
hard-boiled(adjective, calm, person, bad)
6
hardened(adjective, person, careless, indifferent)
6
insentient(adjective, bad, careless, cold)
6
uncompassionate(adjective, calm, person, dull, mean)
5
incurious(adjective, cold, indifferent, feelings)
5
inflexible(adjective, person, careless, indifferent)
5
insusceptible(adjective, insensitive, unsusceptible)
5
obdurate(adjective, person, mean, cool)
4
halfhearted(adjective, mean, cool, unpleasant)
4
hardhearted(adjective, careless, indifferent, cruel)
4
impassible(adjective, quiet, bad, cold)
4
obtuse(adjective, dull, simple, indifferent)
4
soulless(adjective, careless, indifferent, cruel)
4
spiritless(adjective, dull, quiet, cool)
4
torpid(adjective, dull, quiet, flat)
4
uncongenial(adjective, mean, cool, unpleasant)
4
unstirred(adjective, calm, mean, cool)
4
untouched(adjective, calm, mean, cool)
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APASmart Define. (2016). unresponsive thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unresponsive/thesaurus/synonyms
ChicagoSmart Define. 2016. "unresponsive thesaurus" https://smartdefine.org/unresponsive/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, unresponsive thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unresponsive/thesaurus/synonyms>.
MLASmart Define. "unresponsive thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/unresponsive/thesaurus/synonyms>