This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. superlative form of scabby: most scabby.

"She straggled behind him down a darkened side street into one the scabbiest sections of the French Quarter, past two staggering, booze-soaked Burns and a derelict sleeping in a doorway."