Green’s Dictionary of Slang

weak, ineffectual.

1957		‘Ed Lacy’ Lead With Your Left (1958) 1: The lamp looked like a drippy flower.
1968		G. Cuomo Among Thieves 99: They were all from ladies, and they were all maybe a little drippy for his taste.
1975		‘P.B. Yuill’ Hazell and the Three-card Trick (1977) 51: The only snag was that drippy accent.
1979		D. Maitland Breaking Out 169: You are a bloody lop-eared, snaggle-toothed, drippy faced, [...] fart-faced flip of a fucking galah!
1989		T. Blacker Fixx 119: They were almost talented in a drippy, second-hand sort of way.
1996		P. Howard The Joy (2015) [ebook] Browner [...] has written the drippiest load of shite to his bird.
1999		Guardian Rev. 10 July 12: What a collection of drippy, unambitious, unaggressive weeds the men all are!
2004		P. Howard PS, I Scored the Bridesmaids 232: There’s, like, three other couples [...] drippy fockers.
2010		Observer New Review 3 Oct. 4/3: Surely no one could want more of their drippy yuppie nonsense?