NAC 

Abbreviation for "Not A Chance".... pronounced as nack. It is a negative form of expression implying that the individual does not intend or want to do something, etc. It can also be applied that some situation is impossible of occurrence.

Guy 1 - "Dude you wanna get hammered tonight?"
Guy 2 - "Nac, I got an 8 AM tomorrow."

Girl - "Do you guys have any vodka for me?"
Guy - "NAC broad! get the f out"

NAC by Mister Teeeee January 13, 2010

NAC 

not a checkpoint friend
the awkward person
the one out of the loop

I can't believe that NAC is having a party, especially since nobody knows who he is

OMG! The king NAC just sent this broad a pic of his chode to get his rep up

NAC by The Big Bad Plog February 27, 2011

NAC 

Netflix. And. Chill

A short chat term to refer "Netflix And Chill"

In a chat:

Boy: Girl come to NAC
Girl: What the heck is "NAC"

NAC by John1834 January 19, 2018

Nac 

A vape pen for nicotine, but in a word that can be said around adults without raising suspicion. Most commonly found to be used in LA.

Your nac smells pretty burnt you should buy a new pod.

Nac by Disinfectant December 11, 2019

Nac 

somebody that avoids another person in battle knowing he will be on the losing end

Hank G is going to Nac the tournament because he knows he will lose to Too Sense

Nac by MutedDevil June 13, 2021

NAC 

An acronym defined as Niggas Against Crime. In the lesser used form the "C" may be replaced with communism, crack, cholesterol, etc.

Ya'll going to da NAC 5k this weekend? Niggas be hate'n crime. Raise awareness with DAT 5k.

NAC by foxtrot 84 May 17, 2013

nac 

To beat up

I'll nac you.

nac by Brringo March 1, 2022