French soi

← Spanish sí (cognate)

← French se (mention)

← Old French sei (inherited)

← Old French se (mention)

← Proto-Indo-European *swé (inherited)

← Italian sé (cognate)

← Latin sē (inherited)

← Portuguese si (cognate)

→ Esperanto si (derived)

→ Spanish sí (cognate)

→ French se (mention)

→ French amour de soi (affix)

→ Italian sé (cognate)

→ Portuguese si (cognate)