21
unjustified(adjective, right, reasonable, excessive, untrue)
17
undue(adjective, right, wrong, reasonable, false)
17
unreasonable(adjective, right, reasonable, extreme, extravagant)
16
groundless(adjective, right, reasonable, reason, true)
16
unjustifiable(adjective, right, reasonable, unreasonable, extreme)
14
baseless(adjective, right, reasonable, true, untrue)
14
uncalled-for(adjective, right, wrong, reasonable, false)
14
unfounded(adjective, right, reasonable, true, unsubstantiated)
12
unconscionable(adjective, right, reasonable, unreasonable, extreme)
11
gratuitous(adjective, right, reasonable, excessive, untrue)
11
immoderate(adjective, unreasonable, extreme, improper, stiff)
11
indefensible(adjective, right, reasonable, unnecessary, wanton)
11
inordinate(adjective, unreasonable, extreme, improper, stiff)
10
excessive(adjective, unreasonable, extreme, improper, stiff)
10
exorbitant(adjective, unreasonable, extreme, improper, stiff)
10
ungrounded(adjective, right, reasonable, groundless)
10
unwarrantable(adjective, right, reasonable, extreme, irregular)
9
bottomless(adjective, right, reasonable, true, untrue)
9
extravagant(adjective, unreasonable, extreme, improper, ridiculous)
8
outrageous(adjective, unreasonable, extravagant, ridiculous, excessive)
<1234510>
10 years ago|15k views|share |citing 
APASmart Define. (2016). unwarranted thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unwarranted/thesaurus/synonyms
ChicagoSmart Define. 2016. "unwarranted thesaurus" https://smartdefine.org/unwarranted/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, unwarranted thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unwarranted/thesaurus/synonyms>.
MLASmart Define. "unwarranted thesaurus" 11 January 2016. Web. 20 September 2026. <https://smartdefine.org/unwarranted/thesaurus/synonyms>