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Definition of unpardonable
unpardonable
/ʌnˈpɑːrdənəbəl/
un · par · don · a · ble
Adverb:unpardonably
unpardonable Lexical Profile
CEFR
C1
Grade
9
Tier
2
Usage
Top 10k
Syllables
5
unpardonable Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
So severe, offensive, or wrong that it cannot be forgiven, excused, or justified.
Example
"Leaving the confidential medical files unlocked in the public waiting room was an unpardonable breach of professional ethics."
Synonyms
View all synonyms for unpardonable Antonyms
View all antonyms for unpardonable• Rhymes for unpardonable
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Word Origin & Etymology
First recorded in the late 14th century, formed in Middle English from the prefix un- ('not') and pardonable, ultimately deriving from Old French pardonner ('to forgive') and Medieval Latin perdonare ('to give wholeheartedly, remit').
Cite this Entry
Wordmom. (2026). Definition of Unpardonable. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/unpardonable