In

1. To be confirmed
2. To know something that not everybody knows.

1. It's in. Meet me at three.
2 "You're in on this now. Don't tell anyone"

by Zero March 10, 2005

In

(noun) to have an in is to have entry into a conversation with a girl, which will eventually lead to getting in.. and then getting the fuck out

Yo u need a pen right? shes gotta pen thats your in.. go ask if u can borrow hers

by skater3266 February 16, 2009

In

Your name is probably Lina and you're doing the challenge "remove the first and last letter of your name", We love u Lina!!
(meaning: An anxious and ambiverted person, who can be really cool if their social battery doesn't run out)

You're kind of an In person!

by uwu daddy <3 February 14, 2022

In

Being down to do something.

A: Yo bro u wanna go to a boat party?
B: In.

by thefang June 21, 2018

In

gay sex. putting ur d!ck in another mans assh0le

omg gary you’re in!!

by Shd wm April 20, 2020

In

(of an outfielder or infield player) playing closer than normal to home plate.

In search of a force, they brought in the infield

by Arminkshipper June 22, 2024

In

A describing word for when a person or object is in something

Yo look what Timmy’s in

by Carl the thinker January 7, 2023