Yeah, Nah 

Slang from New Zealand

can also be said as Nah, Yeah but with a slightly different meaning.

In context

"Hey bro did you have my keys"

"yeah, Nah" meaning yes I know what you are talking about but no I do not have them

"Nah, Yean." meaning no I do not have them or no about them, but must be a bitch looking for them.

Yeah, Nah by Cuzzy Bro May 20, 2009

Yeah, Nah. Heaps hectic Brah. 

Bogan slang, meaning something is very good, or to agree with a statement that a fellow bogan is saying. Australians tend to use the term 'heaps' in objection to 'many' or 'loads' and therefore, something that is 'heaps hectic' is very good ('hectic' meaning good or nice).

Bogan 1- Drinking tinnies of VB while cruisin' in my commodore
Bogan 2- Yeah, Nah. Heaps hectic Brah.

Yeah, Nah. Heaps hectic Brah. by Ayyy lmao. September 16, 2014

Nah yeah 

Australian slang for yes

Mate: Do you remember that time we went fishing?
You: Nah yeah, you caught that massive barramundi.

Nah yeah by Stingy Jorge February 26, 2017

Yeah but nah 

A standard Australian reply which means yes sort of but not really.

Person 1: Do you want to have sex with Rebecca?

Person 2: Yeah but nah. I would rather do her friend Sue.

Yeah but nah by Mini Malcolm August 27, 2009

Yeah nah nah yeah 

Australian slang, doesn't really mean yes or no just used in conversation when you're trying to agree with someone i have no fucking idea im australian and idek
-The Mike Nolan Show

"What do you do Nollsy?"
"Oh yeah nah nah yeah just a bit of that all"

Yeah nah nah yeah by 2GramsOfEggs June 9, 2016

yeah nah I dunno 

Yeah = yes a) I understand the question, b) it was me, c) i might agree with what you are saying. Nah = No a) I don't think thats right, b) it was not me, c) there is no useful information i can give you, d)come to think of it, maybe i don't agree with you. I dunno = I'd like to put in a disclaimer and nullify anything I just said. Non committal. Common in Australia.

Did you use my toothbrush?
Yeah nah I dunno.

Is it going to be a nice day today?
Yeah nah I dunno.

Do you want a shag?
Yeah nah I dunno.

yeah nah I dunno by Bogfrog September 8, 2007

yeah nah 

said : yeah.... naaaaaaaaaaaaaaaaahhhhhh
used when you are in a conversation and you kinda get what the other person is saying but dont quite agree with what is being said, or dont really give a shit.

cuz: hey bro, did you borrow my bloody car?
bro: yeah nah , i think it was the other guy

yeah nah by weazzellboi August 20, 2007