English frover

← Old English frōfor (inherited)

← Middle English frovre (inherited)

← Middle English frofre (mention)

← Proto-West Germanic *frōbru (inherited)

← Old High German fluobara (cognate)

← Proto-Indo-European *trep- (derived)

← Proto-Indo-European *terp- (mention)

← Old Saxon frōvra (cognate)

← Old Saxon frōfra (mention)

→ English frother (link)