Avestan 𐬓𐬀𐬢𐬵𐬀𐬭

← Proto-Indo-Iranian *swásā (inherited)

← Proto-Indo-European *swésōr (inherited)

← Proto-Iranian *hwáhā (inherited)

← Sanskrit स्वसृ (cognate)

→ Persian خواهر (cognate)

→ Prasuni sūsu (cognate)

→ Sanskrit स्वसृ (cognate)