80 entries under unreasonable topic. ×

6
unrestrained(adjective, intense, violent, wild)
5
absurd(adjective, strange, stupid, crazy)
5
bizarre(adjective, unusual, strange, stupid, special)
5
egregious(adjective, bad, offensive, unusual, special)
5
extortionate(adjective, offensive, extravagant, shocking)
5
nonsensical(adjective, strange, stupid, crazy)
5
ridiculous(adjective, strange, stupid, crazy)
4
overkill(adjective, improper, extravagant, senseless)
4
prodigal(adjective, extravagant, extra, abundant)
3
dear(adjective, harsh, extraordinary, cruel)
3
expensive(adjective, extraordinary, ridiculous, excessive)
3
insane(adjective, strange, stupid, crazy)
3
overpriced(adjective, ridiculous, excessive, expensive)
3
pricey(adjective, extravagant, ridiculous, excessive)
3
too much(expression, adjective, offensive, improper)
3
unmeasurable(adjective, high, extravagant, extra)
2
boundless(complete, deep, extravagant, excessive)
2
crazy(adjective, offensive, enthusiastic, strange, stupid)
2
indulgent(adjective, extravagant, extra, excessive)
2
out of sight(expression, adjective, idiom, strange, crazy)
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APASmart Define. (2016). extreme thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/extreme/thesaurus/synonyms
ChicagoSmart Define. 2016. "extreme thesaurus" https://smartdefine.org/extreme/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, extreme thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/extreme/thesaurus/synonyms>.
MLASmart Define. "extreme thesaurus" 11 March 2016. Web. 28 September 2026. <https://smartdefine.org/extreme/thesaurus/synonyms>