impeccable

[im-pek-uh-buhl]

adjective

1. faultless; flawless; irreproachable.

   impeccable manners.

   Synonyms: unexceptionable, unassailable

2. not liable to sin; incapable of sin.

impeccable

/ ɪmˈpɛkəbəl /

adjective

1. without flaw or error; faultless

   an impeccable record

2. rare,  incapable of sinning

Other Word Forms

• impeccably adverb
• impeccability noun

Word History and Origins

Origin of impeccable¹

First recorded in 1525–35, impeccable is from the Latin word impeccābilis “faultless, sinless”; im- ², peccable

Word History and Origins

Origin of impeccable¹

C16: from Late Latin impeccābilis sinless, from Latin _im- (not) + peccāre to sin

Example Sentences

His already formidable serve became impeccable—Alcaraz lost only three service games the entire tournament.

Read more on The Wall Street Journal

His age notwithstanding, he had an impeccable pedigree: Stanford University undergrad, a stint as Milton Friedman’s research assistant, Harvard Law, a rapid rise at Morgan Stanley, an appointment to the National Economic Council, and more.

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Many will argue with their conclusions, but their impeccable research and clear-cut cause-and-effect scenarios might at least spur actionable change.

Read more on Los Angeles Times

Sweeney’s impeccable screenplay accounts for these seemingly inadvertent details to later bloom into meaningful narrative payoffs.

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Buckley has been building an impeccable resume the past few years.

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Related Words

• exquisite 
• immaculate 
• precise 
• unblemished