English fordone

← Old English fordōn (inherited)

← German vertan (cognate)

← English for (prefix)

← English done (prefix)

← Middle English fordon (inherited)

← Proto-Germanic *fradōnaz (inherited)

← Proto-Germanic *fradōną (mention)

← Dutch verdaan (cognate)

← Saterland Frisian ferdäin (cognate)

→ English done (link)