Dictionary.com
Thesaurus.com
Synonyms

in the know

Idioms  

  1. Privy to special or secret information, as in Not too many people are in the know about this project. [Late 1800s]

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.

The heavy buying of shares by those supposedly in the know is something many investors follow.

From MarketWatch • Apr. 13, 2026

Sign up now to be the first in the know.

From Barron's • Mar. 1, 2026

But for those in the know, it has been just a matter of time.

From BBC • Feb. 15, 2026

And yet, for those in the know, there’s no greater privilege.

From The Wall Street Journal • Jan. 26, 2026

Lucy Raleigh liked being the one in the know and I couldn’t pretend I didn’t care.

From "P.S. Be Eleven" by Rita Williams-Garcia

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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