- Definitions|2
- Thesaurus|232
- Abbreviations|0
| indefensible(adjective, wrong, accusation, vice, forgiveness) | |
| inexcusable(adjective, wrong, accusation, vice, forgiveness) | |
| unjustifiable(adjective, unwarranted, accusation, vice, forgiveness) | |
| unforgivable(adjective, wrong, awful, terrible, unwarranted) | |
| inexpiable(adjective, vice, inexcusable, unforgivable) | |
| irremissible | |
| reprehensible(adjective, inexcusable, unforgivable) | |
| intolerable(adjective, unforgivable) | |
| unwarrantable | |
| unconscionable(adjective, wrong, indefensible, unwarrantable) | |
| untenable(adjective, indefensible, inexcusable, unwarrantable) | |
| unreasonable | |
| blameworthy | |
| disgraceful | |
| execrable | |
| foul | |
| shameful | |
| unallowable | |
| unwarranted | |
| vicious |
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| APA | Smart Define. (2015). unpardonable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unpardonable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unpardonable thesaurus" https://smartdefine.org/unpardonable/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, unpardonable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unpardonable/thesaurus/synonyms>. |
| MLA | Smart Define. "unpardonable thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/unpardonable/thesaurus/synonyms> |