German Undank

← Old English unþanc (cognate)

← German un (prefix)

← German Dank (prefix)

← English unthank (cognate)

← Proto-Germanic *unþankaz (inherited)

← Middle High German undanc (inherited)

← Proto-West Germanic *unþank (inherited)

← Old High German undank (inherited)

← Old High German undanc (mention)

← Dutch ondank (cognate)

→ English unthank (cognate)