199 entries under hard topic. ×

7
impassive(adjective, careless, cold, indifferent)
7
impenetrable(adjective, firm, stiff, unfeeling)
7
thick-skinned(adjective, tough, severe, careless)
7
unforgiving(adjective, person, mean, harsh)
6
hostile(adjective, person, indifferent, feelings)
6
rugged(adjective, set, harsh, coarse)
6
stubborn(adjective, careless, cold, indifferent)
6
unconcerned(adjective, mean, cool, unpleasant)
6
unrelenting(adjective, mean, harsh, cruel)
5
blank(adjective, person, feelings, response)
5
brutal(adjective, mean, tough, severe)
5
implacable(adjective, mean, harsh, cold)
5
inexorable(adjective, mean, harsh, cold)
5
insensible(adjective, mean, tough, severe)
5
solid(adjective, firm, stiff, rigid)
4
cold-hearted(adjective, tough, severe, cruel)
4
dense(adjective, set, strong, firm)
4
fixed(adjective, firm, solid, stiff)
4
inhuman(adjective, mean, tough, severe)
4
inhumane(adjective, mean, harsh, cold)
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APASmart Define. (2016). stony thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/stony/thesaurus/synonyms
ChicagoSmart Define. 2016. "stony thesaurus" https://smartdefine.org/stony/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, stony thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/stony/thesaurus/synonyms>.
MLASmart Define. "stony thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/stony/thesaurus/synonyms>