look up any word, like cleveland steamer:
 
1.
Perfect in manner; sharp, attentive, having perfect answers for virtually all questions, and, of course, large amounts of gel in hair.
"that's why they call me slick."
by jazzpsycho92186 March 20, 2003
 
2.
Smooth, cool, awesome.
Luke is so slick
by luke aleo March 10, 2003
 
3.
cool, original, something (a task etc) that has been well done
mate that was slick.
by gypht October 13, 2003
 
4.
Southern (Memphis) slang word. It is used as a descriptor adjective from "kinda, sorta, a little bit" to "very much, really"--Depends on context
"Hey, let's go to Burger King"
"I slick hate that spot, mane. How 'bout Taco Bell?"

"Hey how long you been dating Chuck?"
"About a year; we slick in love!"
by rtsoka April 30, 2010
 
5.
sly, sneaky, ninja
Someone who does something underhanded without getting caught.
I got a slick kill in unreal when i droped a teleporter at a respawn spot and telefraged him when he respawned.
by Chaos Dragon July 15, 2003
 
6.
a. smooth, cool, seemingly effortless

b.can be used in sarcasm
a. Admirer: that was so slick!

b. onlooker: slick. You just fell on your face.
by ThisIsnotIronic July 22, 2008
 
7.
Automotive racing tires that have no tread pattern to maximize grip.
A good set of slicks are required if you want to get serious about drag racing
by 1Spectre4U August 12, 2003