Green’s Dictionary of Slang

dorky adj.

[dork n. (2) + sfx -y]

(orig. US campus) odd, weird, bizarre, stupid.

[US] in Current Sl. IV:3-4 (1970) 17: Dorky, adj. Ridiculous; unfair.
[US]G. Underwood ‘Razorback Sl.’ in AS L:1/2 58: dorkyadj Odd, strange, weird.
[US]S. King Christine 73: I told her to ask Milton Dodd, her dorky-looking boyfriend. [Ibid.] 86: A new crop of freshmen looking dorky and lost.
[Aus]T. Winton Lockie Leonard: Scumbuster (1995) 143: Sarge slipped into crooning this old dorky song.
[US]P. Cornwell Last Precinct 50: To use a Lucy term, he looks dorky in Bavarian button-up heavy green wool pants.
[SA]Cape Argus (S.Afr.) 28 Jan. 8: He is someone who is [...] sort of dorky with girls.
J. Conley ‘Pipe’ in ThugLit Oct. [ebook] [A] little dorky kid with a bunch of freckles.
[US]A. Trebek The Answer Is 39: ‘Fasten that other button,’ they said. It put a bulge in the jacket and made me look dorky.