10
unwavering(adjective, determined, resolute, purpose, rigid)
9
aloof(adjective, cool, tough, correct, firm)
9
arduous(adjective, hard, tough, severe, rough)
9
blighter(adjective, nothingness, zero, nonentity)
9
blind drunk(expression, adjective, idiom, drunk)
9
blotto
9
callous(adjective, set, strong, hard, severe)
9
clay(noun, remains, corpse)
9
clumsy(adjective, difficult, awkward, tasteless, unsophisticated)
9
compact(adjective, set, hard, tough, firm)
9
extravagant(adjective, fancy, severe, extraordinary, unreasonable)
9
losel(adjective, nothingness, zero, nonentity)
9
rat(adjective, nothingness, zero, nonentity)
8
constrained(adjective, characteristic, awkward, affected, strained)
8
cool(adjective, clear, pleasant, sharp, bright)
8
dead(adjective, dull, late, behind, insentient)
8
dirt(noun, adjective, nothingness, zero, nonentity)
8
distant(adjective, tough, correct, firm, cold)
8
dogmatic(adjective, manner, obstinacy)
8
dry(adjective, inelegance)
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APASmart Define. (2015). stiff thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/stiff/thesaurus/synonyms
ChicagoSmart Define. 2015. "stiff thesaurus" https://smartdefine.org/stiff/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, stiff thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/stiff/thesaurus/synonyms>.
MLASmart Define. "stiff thesaurus" 24 December 2015. Web. 22 September 2026. <https://smartdefine.org/stiff/thesaurus/synonyms>