fordo (v.)youdaoicibaDictYouDict[fordo 词源字典]
Old English fordon "destroy, ruin, kill," from for- + don (see do (v.)). Related: Fordone; fordoing. The adjective foredone "killed, destroyed" (Old English, Middle English) now is archaic, replaced by done for.[fordo etymology, fordo origin, 英语词源]