something that is excellent or attractive.
can be used as a verb "I am gettin some illness tonight". As a description "How was the party?" "It was an illness dude!" Can also be used in the negative tense. "That chick over there is an unillness.."
ILLNESS!
Damn homie that shit is the illness!
So what is the illness tonight?
Bitch gave me herpies, I'm so unilled!
by LD March 30, 2004
Get the illness mug.
When Something is either really good or really bad, Someone who really like or dislike! It is all in the way it is said to define whether it is used in a nice or nasty manor!
1)"Heya, Jo have you seen Titch about tonight?"
"Urgh yeah I'm ill off her!"

2)"Awww man I saw Gem the other night, shez really nice"
"Oh yeah man I'm ill off her, shez mint!"

3)"Have you heard? Lisa Lashes tickets have sold out!"
"NO WAY MAN! I'm well ill off that"

4)"Last night was amazing!!!"
"Yeah I'm so ill off how good it was!"
by Loo_Poo August 23, 2007
Get the ill mug.
Meaning stupid. Contrary to popular belief, ill was first used by Run-DMC NOT the Beastie Boys
by nader's bitch March 5, 2005
Get the ill mug.
dangerously good, illicit, usually used to describe drugs chunes or booty
that bitches ass was on the ill-type!
by Junglistbadbwoii December 22, 2003
Get the ill mug.
1. Olaniyi Jinadu
2. A black young photographer who is very stylish and sopisticated. He is funny, kind, fun and adventurous but also as a soft side to him.

3. Illicit Illusion
1. iLL is a good guy
2. iLL has a lot of ela
3. For the next party, let's employ iLL to take the photos.
by iLLicit iLLusion February 12, 2010
Get the iLL mug.
totaly awesome pimpatude
by steven gibbons August 9, 2005
Get the ill mug.