出典:Wiktionary
From Middle English drubly, drubli, drobli, droflic, from 古期英語 drōflīċ, *drōblīċ, from Proto-Germanic *drōbalīkaz (“turbid”), equivalent to droff or drub + -ly. Cognate with Scots drublie, Old High German truoblīh (“turbid”).
drubly (comparative drublier または more drubly, superlative drubliest または most drubly)