know-it-all Hear it!

know-it-all definition

know·-it-all (-it ôl′)

adjective

Informal pretending or claiming to know much about almost everything

noun

Informal a know-it-all person

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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