sick 

A term used by heroin addicts to discribe the physcial withdrawls the body endures while not using heroin. Heroin withdrawls makes the user sick for around 9 days. The user feels what is similar to a very bad flu which includes extreme body pain, fever, vomiting etc

"i need my junk fix, im sick, man."

sick by LayneStaley101 December 9, 2008

Sick 

Adjective.
1. to feel ill, or not well.
2. A secondary word for awesome.
3. Gross, disgusting.
4. Tired, pissed off.
5. Horny.

1. I feel very sick, I think I might vomit.
2. Dude, that song is so sick!
3. That was sick when he had sex with that gorrilla.
4. I am sick of your attitude.
5. Who wants to get sick with me.

Sick by The Big Bad Jew October 19, 2004

sick 

An adjective similar to cool referring to something that is either great or completely wrong.

1. Your awesome new skateboard is sick!
2. What you said to her was just plain sick.

sick by Pluta IceHaart February 18, 2005

Sick 

Another way of saying brilliant,or a description of something awesome as opposed to its real meaning, sick is a compliment.

That concert was sick!

Sick as a complimentary in a punk rock way.

Sick by Lucinda Belle 444 November 26, 2015

Sick 

Can have various meanings,
In the U.S. it is usually used when something is cool and exciting.
In the UK it is used more to describe something not so pleasant, if something is gruesome and disgusting then it's sick.
The act of vomiting, feeling ill.

It's sick that we get Monday off school.

2 girls 1 cup is sick!

I felt sick yesterday.

Sick by I'mAnonymous February 16, 2008

sick 

Adjective.
Interesting, cool, new.

That rave was sick.

sick by urbanyouth October 3, 2001

Sick 

Contrary to the common definition of 'something extremely good' celebrated chavs/hoodies, sick is better and more effectively used in its traditional meaning, ie something bad/low. Also said 'that sickens me' or 'thats sickening'.

'I have soo much work to do today it's sick'
'I haven't seen Royston in so long it sickens me'
'Fred is grotesque the way he walks is sickening'

Sick by GoldenBarrel November 22, 2009