Proto-Italic *akʷā

→ Catalan aigua (inherited)

→ Cebuano agwas (derived)

→ Corsican acqua (inherited)

→ Spanish agua (inherited)

→ Basque hego (derived)

→ French eau (inherited)

→ Old French ewe (inherited)

→ Galician auga (derived)

→ Italian acqua (inherited)

→ Italian àcua (inherited(it/vec))

→ Latin aqua (inherited)

→ Lombard acqua (inherited)

→ Mirandese auga (derived)

→ Neapolitan acqua (inherited)

→ Portuguese água (inherited)

→ Romanian apă (inherited)

→ Old Portuguese agua (inherited)

→ Istro-Romanian åpe (inherited)

→ Aromanian apã (inherited)

→ Sardinian abba (inherited)

→ Sicilian acqua (inherited)