know-it-all

noun

: one who claims to know everything
also : one who disdains advice
know-it-all adjective

Examples of know-it-all in a Sentence

Recent Examples on the Web Stupidity and know-it-all attitudes will never change, like the incompetence of Biden, Gov. Hochul, Hillary Clinton, Chuck Schumer and Barack Obama, just to name a few. Voice Of The People, New York Daily News, 25 Mar. 2024 But right in the middle of that magic, a know-it-all witch floats next to her. Eric Vilas-Boas, Vulture, 10 Mar. 2024 Not surprisingly, then, Xi’s know-it-all style of rule has led to a number of disastrous decisions. Cai Xia, Foreign Affairs, 6 Sep. 2022 Parker played the role of annoying little brother while Auburn was the know-it-all older sister. Tim Meehan, San Diego Union-Tribune, 20 May 2024 The moon’s clash with Mars brings out your inner know-it-all. USA TODAY, 11 May 2024 In the duo’s adaptation, the town’s doctor played by Strong — known for his turn as the cutthroat Kendall Roy in Succession – expresses more compassion, rather than taking a braggadocious, know-it-all stance. Kalia Richardson, Rolling Stone, 25 Mar. 2024 The actual experts nodded along in mock agreement, smiling through bad suggestions because Hollis was that great to be around, a latitude few others enjoyed in a time of Wooden frustrated by know-it-all fans. Scott Howard-Cooper., Los Angeles Times, 3 Mar. 2024 The former is, at least according to one know-it-all, the best holiday show or movie of all time. Bill Goodykoontz, The Arizona Republic, 14 Feb. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'know-it-all.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1873, in the meaning defined above

Time Traveler
The first known use of know-it-all was in 1873

Dictionary Entries Near know-it-all

Cite this Entry

“Know-it-all.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/know-it-all. Accessed 4 Jul. 2024.

Kids Definition

know-it-all

noun
ˈnō-ət-ˌȯl
: a person who always claims to know everything

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