Green’s Dictionary of Slang

having the appearance or characteristics of a lesbian.

1960		‘Lord & Marshall’ So Willing 54: The combination of Relationship Rhonda and Dykey Della [a lesbian the male narrator had unsuccessfully courted] made it necessary to head for greener pastures.
1963–74		B. Humphries Barry McKenzie [comic strip] in Complete Barry McKenzie (1988) 36: How’s that dykey friend of yours?
1967		Oz 3 2/4: I too am tired of dykey salesladies.
1974		(con. 1945) E. Thompson Tattoo (1977) 321: The blond nurse they had seen doing calisthenics with the dykey-looking brunette.
1989		N. George ‘Boy Talk’ in Buppies, B-Boys, Baps and Bohos (1994) 130: A dykey madam with nasty feet.
1997		A. Bennett diary in Untold Stories (2006) 210: Two droll-looking dikey, long-nosed ladies.
1998		I. Welsh Filth 83: Drummond and her dykey casual moll pals wasting our time.
2001		(con. 1964–8) J. Ellroy Cold Six Thousand 239: The guy urinates. The guy sprays the dime slots. The guy sprays a dykey-ass nun.
2004		M. Cravatt Beyond Ordinary Sex 65: And I’m like fuckin’ take it you ugly, dyke-ass bitch.
2010		W. Courtois Tales My Body Told Me 181: ‘I saw you come in with his dykey sister.’ ‘His dykey sister might be more of a man than you are’.
2011		J.A. Blackbourne Ancients of 318 130: Stupid fucking Council ... coward ass fuckers ... dyke ass bitch.