Portuguese si

← Spanish sí (cognate)

← French soi (cognate)

← Proto-Indo-European *sébʰye (inherited)

← Proto-Indo-European *swé (mention)

← Italian sé (cognate)

← Latin sibi (inherited)

← Latin sancte (derived)

← Latin Iohannes (mention)

← Portuguese sy (alter)

← Portuguese (alter)

← Portuguese obsolete (alter)

← Old Portuguese si (inherited)

→ Spanish sí (cognate)

→ French soi (cognate)

→ Italian si (mention)

→ Italian sé (cognate)

→ Portuguese se (alter)

→ Portuguese lá (link)