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 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 As Satya Nadella, CEO of Microsoft, has said, the learn-it-all will always trump the know-it-all. Robin Elledge, Forbes, 20 Feb. 2024 Get expert advice rather than listening to a know-it-all who will point you in the wrong direction. Eugenia Last, The Mercury News, 26 Jan. 2024 My, how the snotty, rich, entitled, know-it-all kid has fallen. Brian T. Allen, National Review, 18 Jan. 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 1 Jun. 2024.

Kids Definition

know-it-all

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

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