Search Dictionary
Definition of unquestionable
unquestionable
/ˌʌnˈkwɛs.tʃə.nə.bəl/
un · ques · tion · a · ble
Adverb:unquestionably
unquestionable Lexical Profile
CEFR
B2
Grade
8
Tier
2
Usage
Top 10k
Syllables
5
unquestionable Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Not able to be disputed, doubted, or challenged; completely certain and beyond doubt.
Example
"Her dedication to the research project was unquestionable, earning the respect of the entire faculty."
Synonyms
View all synonyms for unquestionable Antonyms
View all antonyms for unquestionable• Rhymes for unquestionable
• Nearby Words
Word Origin & Etymology
First recorded in the late 16th century, formed in English from the prefix un- ('not') and questionable, which derives from Latin quaestionem ('a seeking, inquiry, or doubt').
Cite this Entry
Wordmom. (2026). Definition of Unquestionable. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/unquestionable