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Definition of unimpeachable
unimpeachable
/ˌʌn.ɪmˈpiː.tʃə.bəl/
un · im · peach · a · ble
Adverb:unimpeachably
unimpeachable Lexical Profile
CEFR
C2
Grade
12
Tier
2
Usage
Rare
Syllables
5
unimpeachable Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Entirely trustworthy and beyond doubt, criticism, or reproach.
Example
"The investigative journalist relied on unimpeachable sources within the government to verify the report."
Synonyms
View all synonyms for unimpeachable Antonyms
View all antonyms for unimpeachable• Rhymes for unimpeachable
• Nearby Words
Word Origin & Etymology
Formed in the 17th century from the negative prefix 'un-' and 'impeachable', ultimately tracing back via Old French 'empeschier' (to hinder or accuse) to Late Latin 'impedicare' (to fetter or catch by the foot).
Cite this Entry
Wordmom. (2026). Definition of Unimpeachable. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/unimpeachable