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know-all

American  
[noh-awl] / ˈnoʊˌɔl /

noun

Informal.
  1. a know-it-all.


know-all British  

noun

  1. informal a person who pretends or appears to know a great deal

"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

Etymology

Origin of know-all

First recorded in 1880–85

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.

See Examples For:

Tobin was Tiffany’s manager, and an almost hilariously cliched one: a dominant, abrasive, controlling know-all.

From The Guardian Apr. 12, 2020

Steering away from the competitive tendencies of know-all musos, like those memorably sent up in Nick Hornby's 1995 novel High Fidelity, Fitzgerald wanted the club to concentrate on getting personal reactions to much-loved LPs.

From BBC Oct. 20, 2017

According to Samuel, Triesman is a self-satisfied know-all who would have skipped down the plank eventually even if the Mail hadn't cajoled him with their pointy Sword of Truth.

From The Guardian May 17, 2010

Suddenly he is among us again, the schoolmaster's tone unmistakable, the detachable collar and know-all smile the same he wore when he disappeared several decades ago.

From Time Magazine Archive

Briony had heard a know-all porter saying, with what sounded like satisfaction, that nothing now could stop the German army.

From "Atonement" by Ian McEwan

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