The phrase EH-NA is a very intellectual word used by only the
wisest of humans. The phrase should be used when you want to get you point across, passive aggressively or you strongly disagree with a statement someone has put forward. A stronger word of saying NO but, by catching their attention with the emphasis on the EH.
Came from the show Educating Greater Manchester when
Adika was
having a go at sum other lass about her dead gran.