82 entries under solid topic. ×

4
indurate(adjective, set, hard, firm)
4
jelled(verb, adjective, hard, tough, firm)
4
petrified(verb, adjective, set, hard, firm)
4
steely(adjective, hard, firm, cold)
4
taut(adjective, hard, firm, stiff)
3
consolidated(verb, adjective, set, strong, hard)
3
frozen(adjective, hard, firm, rigid)
2
caked(verb, adjective, set, firm)
2
compressed(verb, adjective, set, strong, hard)
2
condensed(adjective, hard, tough, rigid)
2
fixed(adjective, set, hard, complete, firm)
2
graceless(adjective, hard, firm, stiff)
2
resistant(adjective, strong, hard, tough, fit)
1
arthritic(adjective, hard, firm, stiff)
1
benumbed(verb, adjective, hard, tough, severe)
1
brittle(adjective, hard, firm, stiff)
1
buckram(adjective, hard, firm, stiff)
1
cemented(adjective, set, hard, firm)
1
chilled(verb, adjective, hard, firm)
1
close(adjective, hard, tough, rigid)
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APASmart Define. (2016). hardened thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/hardened/thesaurus/synonyms
ChicagoSmart Define. 2016. "hardened thesaurus" https://smartdefine.org/hardened/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, hardened thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/hardened/thesaurus/synonyms>.
MLASmart Define. "hardened thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/hardened/thesaurus/synonyms>