Green’s Dictionary of Slang

1. (US gay) unethical, villainous.

1972

B. Rodgers Queens’ Vernacular 95: geeky terrifyingly abnormal, unethical, smacking of villainy, fun ‘Marat-Sade was positively geeky!’ Syn: geekish.

2. (US black) of a man, unattractive.

1980		E. Folb Runnin’ Down Some Lines 148: Females, like males, talked about undesirable men in terms of being physically unattractive ([...] geeky, bad news, corroded).
1992		D. Burke Street Talk 2 74: What are you wearing that getup for? You really look geeky.
2000		Guardian G2 21 Jan. 18: A geeky guy with silly facial hair.
2005		L. Theroux Call of the Weird (2006) 163: A chubby, geeky guy.

3. (orig. US campus) socially inept, overly studious.

1993		(con. 1969) N.L. Russell Suicide Charlie 22: I considered trying to fudge the answers to fool the army into thinking that I was some sort of geeky nerd who couldn’t be trusted to lace his boots straight so they wouldn’t put me in the infantry.
2001		(con. 1990s) in J. Miller One of the Guys 54: ‘My brother, when he was little, he was a little geeky little kid that wore glasses’.
2005		P. Howard Curious Incident of the Dog in the Nightdress 51: He’s [...] a clone of his focking geeky brother.
2010		(con. 1973) C. Stella Johnny Porno 44: She had only married the geeky musician because of his money.
2010		Sun. Times Mag. 19 Dec. 34/1: A geeky but rather beautiful metaphor.
2015		email to davidsimon.com 9 May 🌐 I turn on the TV and see some geeky Ivy League, ivory tower motherfucker like Chris Hayes.