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impertinent

American  
[im-pur-tn-uhnt] / ɪmˈpɜr tn ənt /

adjective

  1. intrusive or presumptuous, as persons or their actions; insolently rude; uncivil.

    a brash, impertinent youth.

    Synonyms:
    brazen, pert, saucy, officious, insulting, bold, fresh
    Antonyms:
    polite
  2. not pertinent or relevant; irrelevant.

    an impertinent detail.

  3. Archaic. inappropriate, incongruous, or absurd.

  4. Obsolete. (of persons) trivial, silly, or absurd.


impertinent British  
/ ɪmˈpɜːtɪnənt /

adjective

  1. rude; insolent; impudent

  2. irrelevant or inappropriate

"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

Synonym Usage

Impertinent, impudent, insolent refer to bold, rude, and arrogant behavior. Impertinent, from its primary meaning of not pertinent and hence inappropriate or out of place, has come to imply often an unseemly intrusion into what does not concern one, or a presumptuous rudeness toward one entitled to deference or respect: an impertinent interruption, question, manner toward a teacher. Impudent suggests a bold and shameless impertinence: an impudent speech, young rascal. Insolent suggests insulting or arrogantly contemptuous behavior: unbearably insolent toward those in authority.

Other Word Forms

Derived Forms

Etymology

Origin of impertinent

First recorded in 1350–1400; Middle English from Late Latin impertinent- (stem of impertinēns ) “not belonging.” See im- 2, pertinent

Explanation

If someone's rude without being openly nasty, like a kid in the back row of class quietly heckling his teacher, you can call him impertinent. Impertinent originally meant just what it sounds like, "not pertinent, irrelevant," but it also came to mean "inappropriate, out of place" and therefore "intrusive, presumptuous; behaving without proper respect; insolent." It still carries a condescending air, so it's best used of or to a child being snippy to a grownup: "Don't be impertinent!" The stress is on the second syllable: im-PERT-inent.

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Vocabulary lists containing impertinent

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.

Eleanor can be so impertinent, yet the audience still has to like her.

From Los Angeles Times • Dec. 15, 2025

Mr. Hillyard has irritated Mr. Trump before with questions that the former president deemed impertinent.

From New York Times • Jan. 21, 2024

In the past, words or phrases deemed to have stepped over the line include "impertinent dog", "cad", "blethering", "guttersnipe" and "git".

From BBC • Dec. 29, 2023

I will not appear to condone the diminishment of any group at the expense of impertinent gestures toward another group for any reason, even when the law of the land appears to require it.’”

From Washington Times • Mar. 24, 2023

“If it isn’t impertinent to ask, when is your baby due?”

From "East of Eden" by John Steinbeck

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