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2.
having the quality of scag; being filthy, disgusting, well-worn and used rubbish
Tiffany is a scaggy looking bitch.
by Wally Petro May 20, 2009
 
1.
Used as an adjective to describe something as nasty or disgusting.
Dude, I wouldn't swim in there, that waters scaggy.
by Drew285 November 09, 2008