forworth

From Middle English forworthen, from Old English 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 (third-person singular simple present forworths, present participle forworthing, simple past forworthed or forword, past participle forworthed or forworthen or forworden)

1. (intransitive, rare, Scotland, Northern England, obsolete) To perish, forfare; come to nought or ruin; go wrong.
2. (intransitive, rare, Scotland, Northern England, obsolete) To degenerate (into); become (something inferior); come to.

• forthrow