968 entries under adjective topic. ×

12
cold(hard, severe, harsh, careless)
12
expensive(fancy, clean, informal, extraordinary)
12
fresh(pleasant, wholesome, unpolluted, airy)
12
mannered(awkward, refined, affected, pretentious)
12
punctilious(characteristic, hard, correct, severe)
12
rigorous(hard, severe, rough, difficult)
12
stern(hard, severe, rough, firm)
11
adamantine(firm, determined, resolute, rigid)
11
cruel(hard, severe, rough, harsh)
11
dense(set, strong, hard, tough)
11
excessive(fancy, severe, extraordinary, unreasonable)
11
hard-nosed(hard, severe, rough, firm)
11
intractable(hard, tough, rough, firm)
11
laborious(hard, tough, severe, rough)
11
pompous(counterfeit, noble, sham, grand)
11
stony(hard, firm, careless, indifferent)
11
strait-laced(informal, restraint, severity, pride)
11
stuffy(correct, proper, careful, affected)
10
buckram(hard, firm, dead, rigid)
10
difficult(hard, tough, severe, rough)
10 years ago|48k views|share |citing 
APASmart Define. (2015). stiff thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/stiff/thesaurus/synonyms
ChicagoSmart Define. 2015. "stiff thesaurus" https://smartdefine.org/stiff/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, stiff thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/stiff/thesaurus/synonyms>.
MLASmart Define. "stiff thesaurus" 24 December 2015. Web. 25 September 2026. <https://smartdefine.org/stiff/thesaurus/synonyms>