20 entries under extravagant topic. ×

10
unwarrantable(adjective, wrong, unreasonable, extreme, improper)
7
unfair(adjective, extreme, improper, senseless)
6
uncalled-for(adjective, extreme, improper, stiff)
6
unjust(adjective, unreasonable, extreme, improper)
3
improper(adjective, wrong, unreasonable, extreme, stiff)
1
costing an arm and a leg(expression, adjective, idiom, extreme, improper)
1
far-out(adjective, unreasonable, extreme, improper, stiff)
1
illegitimate(adjective, unreasonable, extreme, improper, stiff)
1
intemperate(adjective, unreasonable, extreme, improper, stiff)
1
out of bounds(expression, adjective, idiom, extreme, improper)
1
overkill(adjective, unreasonable, extreme, improper, stiff)
1
peremptory(adjective, unreasonable, extreme, improper, stiff)
1
pricey(adjective, unreasonable, extreme, improper, stiff)
1
too-too(adjective, unreasonable, extreme, improper, stiff)
1
too great(expression, adjective, unreasonable, extreme, improper)
1
too much(expression, adjective, idiom, unreasonable, extreme)
1
unlawful(adjective, unreasonable, extreme, improper, stiff)
1
unrightful(adjective, unreasonable, extreme, improper, stiff)
1
way out(expression, adjective, extreme, improper, stiff)
1
wrongful(adjective, unreasonable, extreme, improper, stiff)
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APASmart Define. (2015). unjustifiable thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unjustifiable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unjustifiable thesaurus" https://smartdefine.org/unjustifiable/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, unjustifiable thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unjustifiable/thesaurus/synonyms>.
MLASmart Define. "unjustifiable thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/unjustifiable/thesaurus/synonyms>