Latin opulus

← Gaulish *opolos (borrowed)

← Proto-Celtic *oketā (cognate)

← Proto-Indo-European *ok̂u̯-olo- (derived)

← Proto-Indo-European *h₂eḱ- (mention)

← Cornish eythin (cognate)

→ English ople tree (mention)

→ Dalmatian vaple (inherited)

→ Italian oppio (inherited)

→ Italian loppio (mention)