66 entries under firm topic. ×

9
hardened(verb, adjective, set, hard, tough)
8
congealed(verb, adjective, set, hard, tough)
8
set(verb, adjective, hard, tough)
7
jelled(verb, adjective, set, hard, tough)
6
hard(adjective, set, tough, solid)
6
petrified(verb, adjective, set, solid)
6
solid(adjective, set, hard, tough)
5
concrete(adjective, set, hard, tough)
5
consolidated(verb, adjective, set, solid)
5
stiff(adjective, set, hard, tough)
5
thickened(verb, adjective, set, solid)
4
calcified(adjective, set, solid, hardened)
4
compact(adjective, set, hard, tough)
4
ossified(adjective, set, hard, solid)
4
thick(adjective, set, hard, tough)
3
compressed(verb, adjective, set, hard, tough)
3
fixed(verb, adjective, set, hard)
3
unyielding(adjective, set, hard, tough)
2
contracted(adjective, hard, solid, tense)
2
incompressible(adjective, density)
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APASmart Define. (2015). solidified thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/solidified/thesaurus/synonyms
ChicagoSmart Define. 2015. "solidified thesaurus" https://smartdefine.org/solidified/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, solidified thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/solidified/thesaurus/synonyms>.
MLASmart Define. "solidified thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/solidified/thesaurus/synonyms>