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know-it-all

[ noh-it-awl ]
/ ˈnoʊ ɪtˌɔl /
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noun

a person who acts as though he or she knows everything and who dismisses the opinions, comments, or suggestions of others.

adjective

of or characteristic of a know-it-all.

QUIZZES

THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?

Did you ever collect all those state quarters? Put them to good use on this quiz about curious state monikers and the facts around them.
Question 1 of 8
Mississippi’s nickname comes from the magnificent trees that grow there. What is it?

Origin of know-it-all

First recorded in 1930–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for know-it-all

Idioms and Phrases with know-it-all

know it all

see know all the answers.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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