104 entries under extreme topic. ×

1
far-out(improper, senseless, excessive, arbitrary)
1
indulgent(adjective, unreasonable, extravagant, extra)
1
lavish(adjective, fancy, extraordinary, high)
1
limitless(unreasonable, extravagant, excessive, unwarranted)
1
more(unreasonable, extravagant, excessive, unwarranted)
1
needless(unreasonable, extravagant, excessive, unwarranted)
1
over(unreasonable, extravagant, excessive, unwarranted)
1
overboard(adjective, unreasonable, extravagant, extra)
1
overkill(unreasonable, improper, extravagant, senseless)
1
plethoric(unreasonable, extravagant, excessive, unwarranted)
1
posh(adjective, fancy, high, improper)
1
prodigal(adjective, unreasonable, extravagant, extra)
1
profligate(adjective, unreasonable, extravagant, extra)
1
recrementitious(unreasonable, extravagant, excessive, unwarranted)
1
redundant(unreasonable, extravagant, excessive, unwarranted)
1
self-indulgent(unreasonable, extravagant, excessive, unwarranted)
1
super(unreasonable, extravagant, excessive, unwarranted)
1
superabundant(unreasonable, extravagant, excessive, unwarranted)
1
superfluous(unreasonable, extravagant, excessive, unwarranted)
1
supernatural(unreasonable, extravagant, excessive, unwarranted)
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APASmart Define. (2015). stiff thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/stiff/thesaurus/synonyms
ChicagoSmart Define. 2015. "stiff thesaurus" https://smartdefine.org/stiff/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, stiff thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/stiff/thesaurus/synonyms>.
MLASmart Define. "stiff thesaurus" 24 December 2015. Web. 27 September 2026. <https://smartdefine.org/stiff/thesaurus/synonyms>