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Synonyms

impeccable

American  
[im-pek-uh-buhl] / ɪmˈpɛk ə bəl /

adjective

  1. faultless; flawless; irreproachable.

    impeccable manners.

    Synonyms:
    unexceptionable, unassailable
  2. not liable to sin; incapable of sin.


impeccable British  
/ ɪmˈpɛkəbəl /

adjective

  1. without flaw or error; faultless

    an impeccable record

  2. rare incapable of sinning

"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

Other Word Forms


Etymology

Origin of impeccable

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


Explanation

The adjective impeccable describes something or someone without any flaws. A stand-up comedian needs impeccable timing for her jokes to work. The adjective impeccable refers to something or someone without marking or error — but it can describe something spotless or clean. The word comes from the Latin impeccabilis, "to be sinless," which is also an outdated sense in English. You can see how "clean" comes from "sinless." Because of the messy nature of picnic food, it is highly unlikely that you would leave with your clothing still as impeccable as when you arrived, especially if you like lots of mustard and ketchup!

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Vocabulary lists containing impeccable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

“Against the backdrop of excessive dependency on a single molecule, aggressive and heavy diversification bets, along with impeccable commercial execution, are the need of the hour.”

From The Wall Street Journal ● Sep. 23, 2026

Mr. Stone’s work both as adapter and director is impeccable.

From The Wall Street Journal ● Sep. 18, 2026

With impeccable sound design and an eerie score by Ryan and Hays Holladay, Cregger delivers a textured, wholly realized world.

From Los Angeles Times ● Sep. 18, 2026

The German car maker has an impeccable balance sheet and a great new electric-vehicle platform.

From Barron's ● Sep. 4, 2026

At the top, two flight attendants dressed in impeccable uniforms give me dazzling smiles and a bow of their heads.

From "Warcross" by Marie Lu

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