Green’s Dictionary of Slang

often constr. with about, around, to act in an effeminate manner.

1989		W. Dalrymple In Xanadu 191: You wouldn’t find of these boys nancying around reading books or learning English.
2001		B.S. Lambeth NATO’s Air War for Kosovo 195: Similarly, RAF pilots flying combat missions out of Italy scored the insipid air effort as ‘nancying around’ and bordering on cowardice.
2006		D. Mitchell Black Swan Green 253: We’re not gonna nancy about choosing teams today.