Wiktionary
Etymology 1 a. (context Australia slang English) disgusting. Etymology 2
n. A festival.
Usage examples of "festy".
But a new complexion was put upon the matter when to the perplexedly uncondemnatory bench (whereon punic judgeship strove with penal law) the senior king of all, Pegger Festy, as soon as the outer layer of stucckomuck had been removed at the request of a few live jurors, declared in a loudburst of poesy, through his Brythonic interpreter on his oath, mhuith peisth mhuise as fearra bheura muirre hriosmas, whereas take notice be the relics of the bones of the story bouchal that was ate be Cliopatrick (the sow) princess of parked porkers, afore God and all their honours and king's commons that .
As if that were not to be enough for anyone but little headway, if any, was made in solving the wasnottobe crime cunundrum when a child of Maam, Festy King, of a family long and honourably associated with the tar and feather industries, who gave an address in old plomansch Mayo of the Saxons in the heart of a foulfamed potheen district, was subsequently haled up at the Old Bailey on the calends of Mars, under an incompatibly framed indictment of both the counts (from each equinoxious points of view, the one fellow's fetch being the other follow's person) that is to see, flying cushats out of his ouveralls and making fesses immodst his forces on the field.