Latin aeviternus

← Proto-Indo-European *h₂ey- (root)

← Proto-Indo-European *h₂eyu- (derived)

← Proto-Indo-European *h₂ey- (mention)

← Proto-Italic *aiwom (inherited)

← Latin aevum (mention)

← Latin aevitās (suffix)

← Latin rnus (suffix)

→ Middle English eterne (mention)

→ Italian eterno (mention)

→ Latin aeternus (mention)