Green’s Dictionary of Slang

(Aus.) properly informed.

1968		A. Buzo Norm and Ahmed (1973) 15: He’s a real cluey bloke, no risk.
1976		D. Ireland Glass Canoe (1982) 5: Drinkers who couldn’t make it but were cluey enough to call a cab.
1983		R. Aven-Bray Ridgey-Didge Oz Jack Lang 14: He was delightfully surprised to find that the old bird was cluey and was able to verbal with the best.
1997		L. Davies Candy 143: As it was, the casualty doctor was cluey.
2000		Ozwords Apr. 3: Can any cluey chef (or non-cheffish person into headwear) help?
2016		N. Cummins Adventures of the Honey Badger [ebook] Steve, that smart bastard was cluey enough to wait for the water to be broken by one of my brothers before making his descent.