Synonyms|96Antonyms|0|Broader|0Narrower|0Related|0
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stiff(adjective, hard, firm, dead, rigid)
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stony(adjective, hard, firm, solid, stiff)
1
taut(adjective, hard, firm, solid, stiff)
1
tense(adjective, hard, firm, solid, stiff)
1
thick(adjective, hard, firm, solid, stiff)
1
thickened(adjective, hard, firm, solid, stiff)
1
tight(adjective, hard, firm, solid, stiff)
1
unbending(adjective, hard, firm, solid, stiff)
1
ungraceful(adjective, hard, firm, solid, tense)
1
unyielding(adjective, hard, firm, solid, stiff)
1
wooden(adjective, hard, firm, solid, tense)
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boiled down
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built-up
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caked
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calcified
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cimmerian
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clabbered
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close-grained
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concentrated
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concrete
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APASmart Define. (2011). stiff as a board thesaurus. Retrieved September 29, 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 29, 2026).
HarvardSmart Define 2011, stiff as a board thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/stiff_as_a_board/thesaurus/synonyms>.
MLASmart Define. "stiff as a board thesaurus" 24 May 2011. Web. 29 September 2026. <https://smartdefine.org/stiff_as_a_board/thesaurus/synonyms>