1 definition by Chief Judge
Yeahnah. The most common form of Australian slang that is the short form of 'yes, but no'. Commonly used to respond to a mate during conversation, when you are aknowleging what was just said in a conversation, but you have a different view or opinion and are about to express said view or opinion. Also used to express a state of appathy or ambivilance.
"Hey mate, it's a great day to go fishing hey?" and mate responds with, "yeahnah". This means yes it's a great day for fishing but something else is more important. Not limited to fishing conversation but used in all discussions about anything.
by Chief Judge February 19, 2013