It's a blatant word to turn someone down.. if they are getting over-excited you can say nah and quite blatantly shut them the fuck up.
1: Hey guess the fuck what?
2: OMG WHAT?!?!
1: Nah. :)
by Danny Lawless October 30, 2005
Get the Nah mug.
Yes

It is to indicate that the user of this phase has agreed to a statement.
Nah nah, kasuma is a loser.
by Idekwhattotypeherereally August 7, 2021
Get the Nah nah mug.
Adding impression on a topic

Instead of saying "no" the common word is "nah"
Guy 1 : so i met this girl at a party , we were so turnt up

Guy 2 : is she cute ?

Guy 1 : hold on let me show you

Guy 2 : ok

Guy 1 : is she pretty or nah ?

Guy 2 : nahh
by Cookiedough22 December 8, 2013
Get the Nah mug.
-Do You want to see a movie?
-Nah
by Uma55 January 1, 2020
Get the Nah mug.
Elaborating on the term, nah dude. This term can be used in disagreement with any question or statement. Usually used in a chill tone of voice, relaxed.
Girlfriend: Twilight is the best movie ever!
Boyfriend: Nah dude, nah

Friend 1: Hey did you fuck that fat chick?
Friend 2: Nah dude, nah
by prestidigitation5054 February 17, 2009
Get the nah dude, nah mug.