look up any word, like fleek:
 
2.
To feel like you are going to/or have become dangerously intoxicated

being too high or drunk and subsequently taking a turn, for the worst.
"Dude, I am going horribly under"

"Lukes gone under"

"I just went so under"
by SweetWinn November 04, 2011
 
1.
1. broke. not having any money.
2. undercover. not wanting to be seen or not wanting to cause attention to oneself.Being ducked off somewhere.
1. We need to buy some more Remy, you got five on it or are you under?
2. Too many people are getting killed, I'm gonng be on the under.
by reek daddy May 06, 2006
 
3.
Underwear.
"Where the fuck are my unders?!"
by Olga Pervloski August 26, 2008
 
4.
A more masculine term for men's underwear, to replace the cute word *undies*. If you're a man's man you wear unders, not "undies".
Women wear panties. Men wear UNDERS.
by yoyoyasko March 16, 2010
 
5.
Amusing non-sequitur single word joke and/or punchline, all in one. Originated by Sacha Baron Cohen and seen first in Borat. Respect. Endlessly abused, yet appreciated ever since. Often used to initiate or terminate a conversation, or as rejoinder.
Lawyer: I have to go.
Musician: Under.
Lawyer: Under.

Lawyer: Where is the pastille?
Musician: Under the newspaper.
Lawyer: Under.
by Avocado58 September 16, 2009
 
6.
An undercover po, or cop.
Nigga, don't say that to loud, think I spotted an under over there by that Ford Pickup. Yep, he got a walkie talkie mah nigga, lets go around the block.
by OgreSavage February 21, 2003
 
7.
1. unconscious due to anesthesia

2. intoxicated
He was under in minutes, and yet, somehow he woke up before the procedure was complete.
by The Return of Light Joker April 17, 2011