Manky

adj.

Heard in Longford, Meath, Kilkenny, Cork, Dublin, Limerick and Wexford

Dirty or filthy. Can stand alone or modify another word.

In use

Ah feck, me trousers are manky dirty. That jacket you're wearing is manky.

Posh English

Oh bother, my trousers are positively filthy. That jacket you are sporting is quite grubby.

Same phrase, other counties