A synonym for no, however it is 38% more like likely that the statement will be followed by the phrase 'fuck off man'.
You really think that Benjamin Franklin didn't get al little on the side? na man fuck off.
When a Greek person gets annoyed, angry, or just plain bored they will ofter hit the NA to relieve their stress (or as uncultured Americans may describe as giving someone the hand, but with more pizzazz).
"Maria that shirt doesn't match those jeans"
NA MALAKA!
The lazy usage of nah, also meaning no. Usually used to show you are more mature than the other person.
Person one: wanna fuck?
Person two: na
Created Ollie brownhill
Jack hall is fat
Jacks not fat
Na you lyin