Latin cuius

← Ancient Greek ποῖος (cognate)

← Proto-Indo-European *kʷís (inherited)

← Proto-Indo-European *kʷosyos (inherited)

← Proto-Indo-European *kʷosyos (inherited)

← Proto-Italic *kʷojjos (inherited)

← Latin quoius (mention)

← Latin eius (mention)

← Latin suus (mention)

← Latin -ī (mention)

← Oscan púiiu (cognate)

← Oscan púiieh (mention)

→ Spanish cuyo (inherited)

→ Galician cuxo (inherited)

→ Interlingua cuje (borrowed)

→ Italian cuiusso (inherited)

→ Latin -ius (mention)

→ Latin cuias (affix)

→ Portuguese cujo (inherited)