Portuguese quatro

← Proto-Indo-European *kʷetwóres (inherited)

← Proto-Italic *kʷettwōr (inherited)

← Latin quattuor (inherited)

← Old Portuguese quatro (inherited)

→ Corsican quattru (cognate)

→ French quatre (cognate)

→ Kabuverdianu kuátu (derived)

→ Papiamentu kuater (derived)

→ Guinea-Bissau Creole kuatru (derived)