Spanish seis

← Old English siex (cognate)

← English six (cognate)

← French six (cognate)

← Ancient Greek ἕξ (cognate)

← Proto-Indo-European *swéḱs (inherited)

← Latin sex (inherited)

→ Aklanon sais (borrowed)

→ Aragonese sies (cognate)

→ Cebuano sayis (borrowed)

→ Corsican sei (cognate)

→ Spanish veintiséis (compound)

→ Spanish seisavo (suffix)

→ Basque sei (cognate)

→ Persian شش (cognate)

→ Ido sis (derived)

→ Northern Kurdish şeş (cognate)

→ Papiamentu seis (derived)

→ Romansch seis (cognate)

→ Romansch ses (cognate)

→ Romansch sis (cognate)

→ Tagalog sais (borrowed)