Australian slang. Means no.

Sometimes confused with Nah Yeah (Meaning Yes).
Person 1: Wanna go out tonight?
Person 2:. Yeah nah.
by A smol aussie child November 9, 2017
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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.
by Bogfrog September 1, 2007
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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.
by Ayyy lmao. September 17, 2014
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Heavily used slang in Australia. Used when you are reluctant to commit to a firm answer. Yeah nah is another way of saying yeah I hear you but no is the likely answer. While nah yeah is like saying I don't agree with what you saying but yeah is the likely answer.
DO you want to punch some billies at Davo's?
Yeah nah, I've got work tomoz.
by smoothoz February 6, 2018
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Slang used buy kiwis - People from (New Zealand) - It literally just means no.
Kiwi 1: Aye Kia Ora mate

Kiwi 2: Oh hey bro!

Kiwi 1: Aye you wanna go get some mince pies brother?

Kiwi 2: Yeah nah already had lunch bro.

Kiwi 1: Oh bro actuals

Kiwi 2: Yeah sorry mate. Maybe later aye?

Kiwi 3: Yeah yeah yeah
by popcornisyum May 31, 2020
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