79 entries under extreme topic. ×

32
outrageous(adjective, severe, harsh, offensive, exceptional)
26
extravagant(adjective, fancy, severe, harsh, offensive)
25
exorbitant(adjective, hard, fancy, difficult, offensive)
24
excessive(adjective, fancy, severe, thin, harsh)
24
immoderate(adjective, fancy, severe, harsh, offensive)
23
preposterous(adjective, hard, weak, simple, wrong)
19
inordinate(adjective, fancy, severe, harsh, offensive)
19
unconscionable(adjective, offensive, usual, immoral)
16
unwarranted(adjective, right, reasonable, extravagant)
15
undue(adjective, extravagant, extra, ridiculous)
12
extortionate(adjective, offensive, extravagant, shocking)
12
unjustified(adjective, wrong, improper, excessive)
11
unfair(adjective, thin, stiff, extravagant)
9
overpriced(adjective, fancy, high, ridiculous)
9
steep(adjective, hard, fancy, difficult, offensive)
9
unjust(adjective, thin, improper, stiff)
8
crazy(adjective, weak, simple, wrong, offensive)
8
intemperate(adjective, severe, harsh, exceptional)
7
unrestrained(adjective, grand, extravagant, generous)
7
expensive(adjective, ridiculous, excessive, expensive)
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APASmart Define. (2015). unreasonable thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unreasonable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unreasonable thesaurus" https://smartdefine.org/unreasonable/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, unreasonable thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unreasonable/thesaurus/synonyms>.
MLASmart Define. "unreasonable thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/unreasonable/thesaurus/synonyms>