ill 

What retards and try to replace the word "sick" with. Usually signifying that something is awesome, amazing, or cool. Also can be used to say that someone does not feel well or is sick with a virus.

Man 1 "Wow man, that trick was so ill."
Man 2 "Its sick, fag"

ill by KincaidH November 18, 2009

ill 

To get shitty or get an attitude with someone.

goddamnit dont get salty and ill with me mother fucker.

ill by anony1231451 March 29, 2010

ill 

to be a bitch, upset, irritable, etc.

What's wrong with Alyssa? She's been so ill towards me lately.

ill by Aaron F. April 19, 2008

ill 

ill; being unpleasant in a hardcore way

ill; 'Mate that kiddy just vommed up his beezler and ate it that is well ill'

ill by Mogmog January 9, 2008

ILL 

"I Literally Laughed"
A new take on LOL since LOL has lost all meaning due to it being overused.

Alyssa: I'm giggling on teh toilet
Stacey: ILL

ILL by iheartlolcats April 16, 2008

ill 

Being of illegal age.

That girl is ill but I wouldn't say no.

ill by sarah October 24, 2003

ill 

an accented version of IS by atlanta niggas
the S at the end of words becomes a LL

the greeting "What it is" becomes What it illl

ill by Tyrone Walthers January 14, 2008