Romanian patru

← Proto-Indo-European *kʷetwóres (inherited)

← Proto-Italic *kʷettwōr (inherited)

← Latin quattuor (inherited)

← Sardinian batero (cognate)

← Sardinian batoro (mention)

← Sardinian batro (mention)

← Sardinian baturu (mention)

→ Romanian pătrat (mention)

→ Romanian paisprezece (mention)

→ Romanian patrulea (affix)

→ Romanian pătrar (suffix)

→ Romanian pătrime (suffix)

→ Romanian pătrare (mention)

→ Romanian Patru Frați (mention)

→ Istro-Romanian påtru (cognate)

→ Aromanian patru (cognate)