Green’s Dictionary of Slang

1. nubile, ostensibly sexually enthusiastic; usu. of a woman.

1927		in G. Legman Limerick (1953) 179: A girl who lived in Kentucky / Said, ‘Yes, I’ve been awfully lucky. / No man ever yet / On my back made me get, / But sometimes I feel awful fucky’.
c.1935		‘Betty Co-Ed’ [comic strip] in B. Adelman Tijuana Bibles (1997) 56: The All-American girl [...] May they always be as fucky as they are today.
a.1940		in E. Cray Erotic Muse (1992) 139: Frankie was a fucky hussy, / That’s what all the pimps said.
1977		(con. 1949) J.G. Dunne True Confessions (1979) 335: Which made her fuckable. Fucky.

2. see fuck-up adj.