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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Even Della Guardia, that slimy know-it-all, seems like a bastion of integrity in comparison. Rafaela Bassili, Vulture, 12 June 2024 But the low point is its treatment of its female characters, who are painted as irritating, know-it-all nags who just get in the way of a good time. Dave Nemetz, TVLine, 18 Oct. 2024 Sagittarius Black Moon Lilith in Sagittarius is a know-it-all who actually does know it all. Lisa Stardust, People.com, 3 Oct. 2024 This outsider’s perspective judges America’s past by the lights of a cynical, know-it-all. Armond White, National Review, 2 Oct. 2024 See all Example Sentences for know-it-all 

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 22 Dec. 2024.

Kids Definition

know-it-all

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

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