13
indefensible(adjective, wrong, unwarranted, unnecessary, accusation)
12
unforgivable(adjective, wrong, unwarranted, forgiveness, unjustified)
12
unjustifiable(adjective, unreasonable, improper, unwarranted, accusation)
12
unpardonable(adjective, wrong, accusation, vice, forgiveness)
10
undeserving(vile, inappropriate, shameful, unfit, worthless)
8
inexpiable(adjective, vice, forgivable)
8
unwarranted(adjective, right, reasonable, unreasonable, improper)
6
intolerable(adjective, insufferable, unbearable, forgivable)
6
unwarrantable(adjective, unnecessary, unjustified, undeserved, unjustifiable)
5
outrageous(adjective, forgivable)
5
reprehensible(adjective, bad, wrong, vile, shameful)
5
unreasonable(adjective, improper, unwarranted, prejudiced, iniquitous)
5
untenable(adjective, indefensible, forgivable, unpardonable, unwarrantable)
4
irremissible
4
unfair(adjective, unwarranted, unnecessary, prejudiced, iniquitous)
3
excessive(adjective, unwarranted, iniquitous, unjust)
3
unjustified(adjective, unwarranted, unnecessary, undeserved, indefensible)
3
unworthy(adjective, bad, wrong, value, shameful)
3
wrong(adjective, bad, unfit, worthless, unwarranted)
2
blamable(adjective, bad, wrong, vile, inappropriate)
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APASmart Define. (2015). inexcusable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/inexcusable/thesaurus/synonyms
ChicagoSmart Define. 2015. "inexcusable thesaurus" https://smartdefine.org/inexcusable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, inexcusable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/inexcusable/thesaurus/synonyms>.
MLASmart Define. "inexcusable thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/inexcusable/thesaurus/synonyms>