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Definition of inexcusable
inexcusable
/ˌɪnɪkˈskjuːzəbəl/
in · ex · cus · a · ble
Adverb:inexcusably
inexcusable Lexical Profile
CEFR
B2
Grade
8
Tier
2
Usage
Top 10k
Syllables
5
inexcusable Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Too bad, offensive, or severe to be justified, forgiven, or tolerated.
Example
"Leaving the laboratory equipment unsecured overnight was an inexcusable oversight on the part of the supervisor."
Synonyms
View all synonyms for inexcusable Antonyms
View all antonyms for inexcusable• Rhymes for inexcusable
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Word Origin & Etymology
Borrowed in the late 14th century from Old French inexcusable and directly from Latin inexcusabilis ('that cannot be excused'), formed from the privative prefix in- ('not') and excusabilis ('excusable').
Cite this Entry
Wordmom. (2026). Definition of Inexcusable. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/inexcusable