←
Proto-Indo-European *swep- (root)
←
Proto-Indo-European *swépnos (inherited)
←
Proto-Indo-European *swep- (root)
←
Italian sonno (cognate)
←
Italian sogno (cognate)
←
Old Spanish suenno (inherited)
←
Old Spanish suenno (inherited)
←
Portuguese sono (cognate)
←
Portuguese sonho (cognate)
→
Esperanto sonĝo (cognate)
→
Galician soño (cognate)
→
Italian sonno (cognate)
→
Portuguese sono (cognate)
→
Portuguese sonho (cognate)