No. "Nah" and "no" mean the same thing. "Nah" is often followed by "man." As in "nah, man."
-Person 1: Do you wanna go to the movie theater?
-Person 2: Nah.
OR
-Person 1: Do you want to go strip in front of my neighbor's house?
-Person 2: Nah, man. That's just gross.
by I_Love_Me November 9, 2004
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Used as a trendy way to form yes or no sentences, originating from Ty Dolla $ign's song "Or nah".
Will people be listening to Ty Dolla next year or nah?

Is prescriptive grammar stupid or nah?

Is MICHAEL a beast or nah?

Is society going downhill or nah?

Do you discriminate against illiterate rappers or nah?
by Crouching Squirrel February 14, 2014
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"NAH" Is usually a response to something "suprising" or something "foul".

"NAH" is quite similar to "BRO" which is used in the same scenario.

"NAH" Is sometimes followed up by "That's Crazy".
Person 1: Look at this.
*Sends video of something suprising*
Person 2: NAHHH
--------------------------------------------------
Person 1: Look at this.
*Sends video of something suprising*
Person 2: NAH THATS CRAZY BRO
by Ruhroraggy April 17, 2023
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Another way to say "not", when choosing to decide something. Popularly used on social networking sites.
by SGirl424 February 18, 2014
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When you want to say yes, but want to be confusing
"Wanna hang later?" "Oh for nah"
by PattyDaddy March 6, 2018
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Nah: (Nn-ahh) Noun. A word commonly used as a replacement for "no", "nope", "shut up", or "no, don't give me that food, I don't want to get fat". But mostly "no".
Person A: Are you busy today?
Person B: Mmm... nah.

Person A: Do you want to go get dinner?
Person B: Mmm... nah.

Person A: Do you like her?
Person B: Mmm... nah.
by That Chick You Like April 7, 2012
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