75 entries under hard topic. ×

12
fixed(adjective, calm, firm, solid)
11
petrified(verb, adjective, upset, calm)
10
rooted(adjective, fixed, compact, dense)
6
congealed(adjective, firm, solid, tense)
5
rigid(adjective, firm, solid, fixed)
5
solid(adjective, firm, stiff, tense)
4
inflexible(adjective, firm, solid, stiff)
4
set(verb, adjective, firm, solid)
4
stable(adjective, calm, quiet, still)
3
firm(noun, adjective, calm, quiet)
3
stiff(adjective, firm, uncertain, anxious)
2
unyielding(adjective, firm, solid, stiff)
1
annealed(adjective, firm, solid, tense)
1
arthritic(adjective, firm, solid, tense)
1
brittle(adjective, firm, solid, tense)
1
buckram(adjective, firm, solid, tense)
1
cemented(adjective, firm, solid, tense)
1
contracted(adjective, firm, solid, tense)
1
creaky(adjective, firm, solid, tense)
1
graceless(adjective, firm, solid, tense)
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APASmart Define. (2015). frozen thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/frozen/thesaurus/synonyms
ChicagoSmart Define. 2015. "frozen thesaurus" https://smartdefine.org/frozen/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, frozen thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/frozen/thesaurus/synonyms>.
MLASmart Define. "frozen thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/frozen/thesaurus/synonyms>