82 entries under solid topic. ×

17
hard(adjective, tough, severe, firm, attitude)
15
inured(noun, adjective, set, strong, hard)
14
tough(noun, adjective, strong, hard, severe)
13
set(verb, adjective, hard, tough, firm)
12
solidified(verb, adjective, set, hard, tough)
11
stony(adjective, person, hard, tough, severe)
9
stiff(adjective, hard, tough, firm)
9
inflexible(adjective, person, hard, tough, firm)
9
rigid(adjective, strong, hard, tough, firm)
8
firm(adjective, set, strong, hard, tough)
6
annealed(verb, adjective, hard, firm)
6
impervious(noun, adjective, set, hard, tough)
6
seasoned(adjective, set, strong, hard, tough)
6
unyielding(adjective, set, hard, tough, firm)
5
congealed(verb, adjective, set, hard, tough)
5
ossified(adjective, firm, determined, resolute)
5
steeled(noun, verb, adjective, set, strong)
5
thickened(verb, adjective, hard, firm)
5
unbending(adjective, hard, firm, careless)
4
calcified(adjective, set, firm, petrified)
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APASmart Define. (2016). hardened thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/hardened/thesaurus/synonyms
ChicagoSmart Define. 2016. "hardened thesaurus" https://smartdefine.org/hardened/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, hardened thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/hardened/thesaurus/synonyms>.
MLASmart Define. "hardened thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/hardened/thesaurus/synonyms>