Dictionary.com
Thesaurus.com

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:

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

It is left to Geraldine Fitzgerald as a pipe-smoking Scottish school teacher and Christopher Godwin as a widely travelled know-all to persuade us that the English countryside is not populated entirely by half-wits.

From The Guardian Nov. 24, 2010

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

Austrian-born Dr. Karl von Frisch of the University of Munich is widely icgarded as the know-all of the bee-alls.

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

Vocabulary.com logo
by dictionary.com

Just like flashcards, but way more fun

Don't take our word for it. Leave the boring studying behind and join VocabTrainer today. You'll learn even faster and never look back.

Take me to Vocabulary.com