get with it

get with (someone or something)

1. To be knowledgeable about and engaged with something. The boss is going to want us to know exact figures in the meeting, so you better get with it. You really need to get with the times, Dad. People just don't talk that way anymore!
2. slang To have a romantic or flirtatious interaction with someone. A: "Is it true that you got with Katie over the summer?" B: "Yeah, we've been on a few dates so far."
3. slang To have sex with someone. I wouldn't be surprised if he got with her last night after the party—they were very flirty all night.
4. To meet with someone or some group, especially in order to accomplish some specific task. I want you to get with our lawyers right away and see what needs to be done.
See also: get

get with it

slang To understand or be knowledgeable of modern times, especially as relates to the contemporary trends, ideas, or fashions. (Usually said as a jocular or sarcastic imperative.) Get with it, John, nobody wears their hat like that anymore! Lots of couples live together before they're married, Grandpa. Get with it!
See also: get
Farlex Dictionary of Idioms.

get with it

 
1. Inf. to modernize one's attitudes and behavior. Get with it, Martin. Go out and buy some new clothes! You really have to get with it, Ernie.
2. Inf. to hurry up and get busy; to be more industrious with something, Get with it; we've got a lot to do. Let's get with it. There's a lot of work to be done.
See also: get
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

get ˈwith it

(informal) become aware of the most recent ideas, developments, events, etc: You never seem to know what’s happening in the world around you. Time you got with it, Paul.
See also: get
Farlex Partner Idioms Dictionary

get with it

1. in. to modernize one’s attitudes and behavior. Get with it, Martin. Get real!
2. in. to hurry up and get busy; to be more industrious with something. Let’s get with it. There’s a lot of work to be done.
See also: get
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions

with it, to be/to get

To be (become) up-to-date, conversant with the latest style. This American slang expression originated during the 1920s, when it became associated with sex appeal (thanks to Elinor Glyn, author of a stream of popular fiction, and the movie star Clara Bow, the “It Girl”). Richard Condon used the cliché in The Manchurian Candidate (1959): “They are with it, Raymond. Believe me.”
See also: get
The Dictionary of Clichés by Christine Ammer
See also:
  • get with
  • get with (someone or something)
  • get with someone
  • write the book on
  • wrote the book on
  • wrote the book on (something)
  • know a thing or two
  • know a trick or two
  • know (one's) beans
  • keep on top of (someone or something)