83 entries under adjective topic. ×

7
hardened(hard, careless, indifferent, cruel)
5
hard-boiled(noun, hard, careless, indifferent)
5
inured(noun, hard, careless, indifferent)
4
callous(noun, verb, dull, hard)
4
hard(careless, indifferent, cruel, apathetic)
4
insensitive(noun, hard, careless, indifferent)
4
thick-skinned(noun, hard, careless, indifferent)
4
toughened(noun, hard, careless, indifferent)
3
heartless(hard, careless, indifferent, cruel)
3
obdurate(hard, careless, indifferent, cruel)
3
steeled(noun, hard, unfeeling, unsympathetic)
2
accustomed(hard, unfeeling, unsympathetic, prepared)
2
calcified(verb, calcify, curdled, calloused)
2
hardhearted(hard, careless, indifferent, cruel)
2
indurate(verb, dull, develop, blunt)
2
indurated(hard, careless, indifferent, cruel)
2
seasoned(hard, unfeeling, unsympathetic, prepared)
2
stony(hard, careless, indifferent, cruel)
2
stubborn(hard, careless, indifferent, cruel)
2
tough(noun, hard, careless, indifferent)
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APASmart Define. (2015). case-hardened thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/case-hardened/thesaurus/synonyms
ChicagoSmart Define. 2015. "case-hardened thesaurus" https://smartdefine.org/case-hardened/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, case-hardened thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/case-hardened/thesaurus/synonyms>.
MLASmart Define. "case-hardened thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/case-hardened/thesaurus/synonyms>