80 entries under unreasonable topic. ×

1
more(extravagant, excessive, unwarranted, very)
1
needless(spare, improper, extravagant, extra)
1
obsessive(adjective, keen, passionate, violent, enthusiastic)
1
over(separate, extravagant, out, excessive)
1
overboard(adjective, enthusiastic, ill, sick)
1
plethoric(extravagant, excessive, unwarranted, very)
1
posh(adjective, improper, stiff, extravagant)
1
recrementitious(extravagant, excessive, unwarranted, very)
1
redundant(spare, useless, extravagant, extra)
1
silly(adjective, stupid, absurd, excessive)
1
sky-high(adjective, high, extravagant, extra)
1
stratospheric(adjective, high, extravagant, excessive)
1
superabundant(adjective, spare, useless, extravagant)
1
too-too(adjective, last, improper, stiff)
1
too many(expression, extravagant, excessive, unwarranted)
1
unbalanced(adjective, extravagant, excessive, expensive)
1
unbounded(extravagant, excessive, unwarranted, very)
1
uncalled-for(adjective, spare, high, useless)
1
up to here(expression, adjective, idiom, stiff)
0
very expensive(expression, adjective)
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APASmart Define. (2016). extreme thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/extreme/thesaurus/synonyms
ChicagoSmart Define. 2016. "extreme thesaurus" https://smartdefine.org/extreme/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, extreme thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/extreme/thesaurus/synonyms>.
MLASmart Define. "extreme thesaurus" 11 March 2016. Web. 29 September 2026. <https://smartdefine.org/extreme/thesaurus/synonyms>