droff

The story

1. Old English · inherited fromdrōf“dreggy; dirty; troubled”
2. Middle English · inherited fromdrof“turbid, troubled”
3. English todaydroff

From Middle English drof (“turbid, troubled”), from Old English drōf (“dreggy; dirty; troubled”). Cognate with Dutch droef (“sad; miserable”), German trüb (“turbid; dim; sad”) (English trub).