in the know

in the know

Knowledgeable or having access to information about something, especially that which is exclusive or secret. I'll give a call to my source at city hall. He's in the know about the mayor's plans. When it comes to coding, Jenny is definitely in the know—she'll be able to answer your questions.
See also: know
Farlex Dictionary of Idioms.

in the know

knowledgeable. Let's ask Bob. He's in the know. I have no knowledge of how to work this machine. I think I can get myself in the know very quickly though.
See also: know
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

in the know

Privy to special or secret information, as in Not too many people are in the know about this project. [Late 1800s]
See also: know
The American Heritage® Dictionary of Idioms by Christine Ammer.

in the ˈknow

(informal) having information or knowledge that most other people do not have: Only a few of us were in the know about the date of the wedding. We didn’t want the press to find out. People in the know say that this is the best Spanish wine you can buy.
See also: know
Farlex Partner Idioms Dictionary

in the know

mod. knowledgeable (about something); having inside knowledge (about something). Sure I’m in the know. But I’m not telling.
See also: know
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions

in the know

Informal
Possessing special or secret information.
See also: know
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • feel out of things
  • write the book on
  • wrote the book on
  • wrote the book on (something)
  • know a thing or two
  • know every trick in the book
  • sadder but wiser
  • no stranger to (something)
  • get with
  • get with (someone or something)