unpardonable
🇺🇸
/ʌnˈpɑːrdnəbl/
🇬🇧
/ʌnˈpɑːdnəbl/
adjective
R
Something that is so bad or wrong that it cannot be forgiven or excused.
Lying on the exam was an unpardonable offense that led to his expulsion from school.
translation
Something that is so bad or wrong that it cannot be forgiven or excused.