Synonyms|148Antonyms|73|Broader|0Narrower|0Related|20
13
inexcusable(adjective, wrong, unwarranted, forgiveness, unjustified)
12
unpardonable(adjective, wrong, awful, terrible, unwarranted)
9
indefensible(adjective, wrong, unwarranted, forgiveness, unjustified)
8
unjustifiable(adjective, unwarranted, forgiveness, unjustified, undeserved)
6
inexpiable(adjective, inexcusable, unpardonable)
6
reprehensible(adjective, inexcusable, unpardonable)
5
untenable(adjective, inexcusable)
4
deplorable(adjective, unjustifiable, inexcusable)
4
disgraceful(adjective, inexcusable)
4
irremissible
3
unreasonable(adjective, unwarranted, unfair, undue)
3
unwarrantable
3
wrong(adjective, unwarranted, unfair, undue, indefensible)
3
arrant
2
heinous
2
shameful(adjective, inexcusable)
2
awful
2
unconscionable(adjective, inexcusable)
2
unwarranted(adjective, unfair, unjustified, undue, undeserved)
2
bad
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APASmart Define. (2015). unforgivable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unforgivable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unforgivable thesaurus" https://smartdefine.org/unforgivable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, unforgivable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unforgivable/thesaurus/synonyms>.
MLASmart Define. "unforgivable thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/unforgivable/thesaurus/synonyms>