[ uhn-im-pee-chuh-buh l ]
/ ˌʌn ɪmˈpi tʃə bəl /


above suspicion; impossible to discredit; impeccable: unimpeachable motives.


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Origin of unimpeachable

First recorded in 1775–85; un-1 + impeachable

OTHER WORDS FROM unimpeachable

un·im·peach·a·bil·i·ty, un·im·peach·a·ble·ness, nounun·im·peach·a·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for unimpeachable

British Dictionary definitions for unimpeachable

/ (ˌʌnɪmˈpiːtʃəbəl) /


unquestionable as to honesty, truth, etc

Derived forms of unimpeachable

unimpeachability or unimpeachableness, noununimpeachably, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012