From Middle English ivi, from Old English īfiġ, from Proto-West Germanic *ibig, *ibag, *ibah, from Proto-Germanic *ibahs (compare West Flemish iefte, Low German Eiloov, Ieloof, German Efeu), from Proto-Indo-European *(h₁)ebʰ- (compare Welsh efwr (“black elder”), Ancient Greek ἴφυον (íphuon, “spike-lavender, Lavandula Spica”)).