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Definition of undebatable
undebatable
/ˌʌndɪˈbeɪtəbl/
un · de · bat · a · ble
Adverb:undebatably
undebatable Lexical Profile
CEFR
C1
Grade
9
Tier
2
Usage
Rare
Syllables
5
undebatable Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Impossible to question, dispute, or argue against; certain and beyond doubt.
Example
"The scientific evidence supporting the effectiveness of the treatment was undebatable."
Synonyms
View all synonyms for undebatable Antonyms
View all antonyms for undebatable• Rhymes for undebatable
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Undebatable. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/undebatable