968 entries under adjective topic. ×

19
steep(fancy, severe, big, crazy)
17
artificial(counterfeit, awkward, sham, affected)
17
solid(set, strong, hard, secure)
17
unbendable(firm, determined, resolute, rigid)
16
austere(hard, severe, rough, difficult)
15
harsh(upset, hard, severe, rough)
15
powerful(strong, great, severe, harsh)
15
taut(hard, rough, firm, harsh)
14
wooden(dull, hard, correct, firm)
14
exorbitant(fancy, severe, informal, extraordinary)
14
forced(hard, difficult, unusual, strange)
14
inelastic(hard, tough, firm, solid)
14
strict(hard, tough, severe, rough)
14
unnatural(unusual, counterfeit, awkward, regular)
13
affected(correct, difficult, awkward, pride)
13
awkward(counterfeit, hollow, clumsy, shallow)
13
dear(fancy, difficult, harsh, informal)
13
high(fancy, extraordinary, crazy, noble)
13
potent(strong, great, severe, firm)
13
starchy(hard, firm, proper, grand)
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APASmart Define. (2015). stiff thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/stiff/thesaurus/synonyms
ChicagoSmart Define. 2015. "stiff thesaurus" https://smartdefine.org/stiff/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, stiff thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/stiff/thesaurus/synonyms>.
MLASmart Define. "stiff thesaurus" 24 December 2015. Web. 24 September 2026. <https://smartdefine.org/stiff/thesaurus/synonyms>