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49 entries under solid topic. ×

1
impliable(adjective, hard, firm, stiff)
1
incompliant(adjective, hard, firm, tense)
1
indurate(adjective, hard, firm, stiff)
1
inelastic(adjective, hard, firm, stiff)
1
inflexible(adjective, hard, firm, stiff)
1
jelled(adjective, hard, firm, tense)
1
mechanical(adjective, hard, firm, tense)
1
numbed(adjective, hard, firm, tense)
1
ossified(adjective, hard, firm, tense)
1
petrified(adjective, hard, firm, tense)
1
refractory(adjective, hard, firm, tense)
1
resistant(adjective, hard, firm, tense)
1
rheumatic(adjective, hard, firm, stiff)
1
rigid(adjective, hard, firm, stiff)
1
set(adjective, hard, firm, stiff)
1
solidified(adjective, hard, firm, tense)
1
starched(adjective, hard, firm, stiff)
1
starchy(adjective, hard, firm, tense)
1
stark(adjective, hard, firm, tense)
1
stony(adjective, hard, firm, stiff)
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APASmart Define. (2011). stiff as a board thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/stiff_as_a_board/thesaurus/synonyms
ChicagoSmart Define. 2011. "stiff as a board thesaurus" https://smartdefine.org/stiff_as_a_board/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2011, stiff as a board thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/stiff_as_a_board/thesaurus/synonyms>.
MLASmart Define. "stiff as a board thesaurus" 24 May 2011. Web. 28 September 2026. <https://smartdefine.org/stiff_as_a_board/thesaurus/synonyms>