出典:Wiktionary
From Middle English forworthen, from 古期英語 forweorþan (“to perish, pass away, vanish; deteriorate, sicken”), from Proto-Germanic *frawerþaną (“to perish, come to ruin”), equivalent to for- (“away, wrongly, badly”) + worth (“to turn into, become”). Cognate with Dutch verworden.
forworth (三人称単数 現在形 forworths, 現在分詞 forworthing, 過去形 forworthed または forword, 過去分詞 forworthed または forworthen または forworden)