Uppa
Up the, said fast, as in uppa Derry. Usually roared at a match.
Uppa Derry, lads, uppa Derry!

Shall I translate it into posh English for you, mucker?
Ah, the post has arrived, and so have you. Here it is in posh English.
Up with Derry, gentlemen, up with Derry!
Questions
What does uppa mean in Ireland?
Up the, said fast, as in uppa Derry. Usually roared at a match.
How do you use uppa in a sentence?
“Uppa Derry, lads, uppa Derry!”
Updated