Middle Low German vor-

← German ver- (cognate)

← German er- (cognate)

← English for- (cognate)

← Proto-West Germanic *fra- (inherited)

← Dutch ver- (cognate)

← Dutch er- (cognate)

← Old Saxon far- (inherited)

← Old Saxon fura- (mention)

← Old Saxon fur- (mention)

→ Danish forklare (mention)

→ Danish fortolke (affix)

→ Danish formå (affix)

→ German verrotten (mention)