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Definitions

know-it-all

[noh-it-awl] / ˈnoʊ ɪtˌɔl /


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.

But it’s voters who decide elections, not know-it-all columnists.

From Los Angeles Times • Jun. 7, 2026

In a 2015 biography, author Ashlee Vance described Musk as "a confrontational know-it-all" with an "abundant ego".

From BBC • Jun. 4, 2026

Volker Beck, president of the German-Israeli Society, labelled Steinmeier's comments on the war "grossly inappropriate" and said they displayed a "smug know-it-all attitude".

From Barron's • Mar. 24, 2026

I offered that information with an apology, since nobody wants to come off as a know-it-all; however, matching shows with the right streaming service is part of a TV critic’s job these days.

From Salon • Dec. 10, 2025

I wasn’t the only one who found this particular know-it-all obnoxious.

From "Glitch" by Laura Martin




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