nance, v. — Green’s Dictionary of Slang

nance v.

(US) to act or speak in an effeminate or homosexual manner.

1968		K. Brasselle Cannibals 283: ‘Good Lord,’ he nanced, ‘is nothing safe?’.
1974		(con. 1940s) E. Thompson Tattoo (1977) 243: ‘Ok, Buck,’ he nanced in a high voice.

nancing (adj.)

effeminate or homosexual in manner.

1974

(con. 1945) E. Thompson Tattoo (1977) 317: Yet there was nothing prissy or nancing about him.