0
impenitent(adjective, hard, unfeeling, unsympathetic, hardened)
0
impertinent
0
imperturbable
0
impervious
0
impious(adjective, hard, unfeeling, unsympathetic, hardened)
0
inaccessible(adjective, hard, unfeeling, unsympathetic, hardened)
0
indifferent(adjective, hard, unfeeling, unsympathetic, hardened)
0
indurated(adjective, hard, unfeeling, unsympathetic, hardened)
0
inert
0
inexorable
0
insentient(adjective, hard, unfeeling, unsympathetic, hardened)
0
insusceptible
0
intractable
0
inure(verb, dull, develop, blunt, accustom)
0
irreverent(adjective, hard, unfeeling, unsympathetic, hardened)
0
jell(verb, close, set, firm, dry)
0
jellied(verb, gel, calcify, coagulate, candied)
0
jellify(verb, jellied, calcify, coagulate, gelatinate)
0
join(verb, jellied, calcify, coagulate, gelatinate)
0
lave(jellied, gel, calcify)
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APASmart Define. (2013). casehardened thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/casehardened/thesaurus/synonyms
ChicagoSmart Define. 2013. "casehardened thesaurus" https://smartdefine.org/casehardened/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2013, casehardened thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/casehardened/thesaurus/synonyms>.
MLASmart Define. "casehardened thesaurus" 19 May 2013. Web. 22 September 2026. <https://smartdefine.org/casehardened/thesaurus/synonyms>