Green’s Dictionary of Slang

gross! excl.

[gross adj.]

(mainly US teen/campus) disgusting!

[US] oral testimony in Lighter HDAS I.
[US]J. Wambaugh Choirboys (1976) 326: ‘Oh shit, he’s covered with puke!’ [...] ‘Oh gross!’.
[WI]M. Thelwell Harder They Come 322: Oh gross — what a bummer.
[US]S. Morgan Homeboy 137: Gross [...] For an encore she’ll smoke a cigaret up there.
[UK]Indep. on Sun. 12 Mar. 12: ‘Gross,’ is Harvey’s comment.
[UK]Sun. Times Mag. 19 Dec. 21/1: Gross, I’d get out of there!
[UK]J. Fagan Panopticon (2013) 44: He’s used a porno mag tae make his wraps. I’ve got a bit of some guy’s knob on mine, mid-cum-shot, gross.
[US]N. Walker Cherry 24: ‘Oh, gross. You sound fucked up’.