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2.
not
Derived from existential confusion, meaning "hot; attractive; sexy;" etc.
"You are so not!"
by cliche August 15, 2003
 
8.
not
Someone that is not hot.
Also: Nottie.
Oh snap, fool, she looks so not right now!
Dammit, she's a nottie.
Good from far, far from good.
by MoonKnight March 04, 2003
 
9.
not
A word people used to say in the early 90s made popular by the movie Wayne's World. It means "not really" or "we were just kidding".
I got struck by lightning while I was rollerblading today. Not!
by P.A. July 13, 2005
 
10.
Not
Used to describe an actual state of being.


When someone does something to the extreeme, or does something too much, you -contrary to popular belief- say "not" to describe those actions
-Not Jon Ha is a fag.
-Not Jen got dumped by Jon Ha.

-Not always beating up Jon Ha.
by JonHaisGay October 25, 2004
 
11.
Not
An unattractive male.
"Don't you like him?"
"Ugh, no way. He's like, sooo not."
by CyanideKiss February 23, 2010
 
12.
Not
1> To intend to carry out a task and back out at the last moment.
2> To make a false statement.
James looks like Graham Cash not.
by Timmy2000 May 01, 2003
 
13.
not
Boolean logic operator that inverts a given value. Often denoted with '~' ('!' in programming languages).
(NOT a) AND (NOT a') = a
by cloudRunner March 22, 2006