2
incompressible(adjective, firm, density)
2
indurate(adjective, set, hard, firm, solid)
2
inflexible(adjective, hard, tough, firm, solid)
2
nonporous(adjective, hard, tough, solid, rigid)
2
rigid(adjective, set, hard, tough, firm)
2
steeled(verb, adjective, set, firm, solid)
2
tough(adjective, hard, solid, rigid, inflexible)
2
toughened
2
vitrified(adjective, set, solid, heavy, deep)
1
adhered(verb, cohered)
1
annealed(verb, adjective, hard, firm, solid)
1
arthritic(adjective, hard, firm, solid, tense)
1
backed
1
benumbed(verb, adjective, hard, firm, solid)
1
bound(verb, cohered)
1
brittle(adjective, hard, firm, solid, tense)
1
buckram(adjective, hard, firm, solid, tense)
1
caked(verb, adjective, set, firm, solid)
1
calloused
1
case-hardened
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APASmart Define. (2015). solidified thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/solidified/thesaurus/synonyms
ChicagoSmart Define. 2015. "solidified thesaurus" https://smartdefine.org/solidified/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, solidified thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/solidified/thesaurus/synonyms>.
MLASmart Define. "solidified thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/solidified/thesaurus/synonyms>