Old English sweostor

← Proto-Germanic *swestēr (inherited)

← Old High German swestar (cognate)

← Proto-Indo-European *swésōr (derived)

← Old Norse systir (cognate)

← Old Frisian swester (cognate)

← Old Saxon swestar (cognate)

→ English sister (mention)

→ Old English gesweostor (affix)

→ Old English sweostorsunu (compound)

→ Middle English suster (inherited)

→ Ancient Greek ἔορ (cognate)

→ Scots sister (inherited)

→ Yola zister (inherited)