104 entries under extreme topic. ×

8
vigorous(adjective, strong, pleasant, severe, solid)
7
heavy(adjective, set, hard, tough, severe)
7
immoderate(adjective, fancy, severe, unreasonable)
6
costly(adjective, fancy, extraordinary, high)
6
drastic(adjective, hard, severe, rough, harsh)
6
high-priced(adjective, fancy, extraordinary, high)
6
overpriced(adjective, fancy, crazy, unreasonable)
6
pricey(adjective, fancy, crazy, high)
6
undue(adjective, severe, unreasonable, extravagant)
5
brisk(adjective, clear, cool, pleasant, severe)
5
exact(adjective, correct, severe, harsh, solid)
5
unreasonable(adjective, fancy, high, extravagant)
4
enormous(adjective, unreasonable, extra, ridiculous)
4
extortionate(adjective, fancy, unreasonable, improper)
4
luxurious(adjective, extraordinary, noble, grand)
4
oppressive(adjective, hard, severe, rough, difficult)
4
overmuch(adjective, unreasonable, improper, extravagant)
4
pitiless(adjective, severe, harsh, cruel, determined)
4
sharp(adjective, clear, pleasant, severe, bright)
4
towering(adjective, severe, unreasonable, noble)
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APASmart Define. (2015). stiff thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/stiff/thesaurus/synonyms
ChicagoSmart Define. 2015. "stiff thesaurus" https://smartdefine.org/stiff/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, stiff thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/stiff/thesaurus/synonyms>.
MLASmart Define. "stiff thesaurus" 24 December 2015. Web. 26 September 2026. <https://smartdefine.org/stiff/thesaurus/synonyms>