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[im-pek-uh-buh l] /ɪmˈpɛk ə bəl/
faultless; flawless; irreproachable:
impeccable manners.
not liable to sin; incapable of sin.
Origin of impeccable
First recorded in 1525-35, impeccable is from the Latin word impeccābilis faultless, sinless. See im-2, peccable
Related forms
impeccability, noun
impeccably, adverb
1. unassailable, unexceptionable. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for impeccably
Contemporary Examples
Historical Examples
  • Yet in dress and speech he knew himself to be impeccably Spanish, and was not Don Esteban there to confirm him?

    Captain Blood Rafael Sabatini
  • Towards the girl and her father he was impeccably respectful.

    Out of the Depths Robert Ames Bennet
  • “You were very sick, Padre; and in the fever you––” the impeccably honest fellow hesitated.

    Carmen Ariza Charles Francis Stocking
  • Then he deliberately spat upon the impeccably shining red hood of Sophie's roadster.

    Burned Bridges Bertrand W. Sinclair
  • Certainly this story of old Salem is impeccably written and its subtle handling of tone and atmosphere is beyond dispute.

British Dictionary definitions for impeccably


without flaw or error; faultless: an impeccable record
(rare) incapable of sinning
Derived Forms
impeccability, noun
impeccably, adverb
Word Origin
C16: from Late Latin impeccābilis sinless, from Latin im- (not) + peccāre to sin
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
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Word Origin and History for impeccably



1530s, "not capable of sin," from Middle French impeccable (15c.) or directly from Late Latin impeccabilis "not liable to sin," from assimilated form of in- "not, opposite of" (see in- (1)) + pecare "to sin," of unknown origin. Meaning "faultless" is from 1610s. Related: Impeccably.

Online Etymology Dictionary, © 2010 Douglas Harper
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