Italian sonno

← Dalmatian samno (cognate)

← Spanish sueño (cognate)

← French somme (cognate)

← Proto-Indo-European *swep- (root)

← Proto-Indo-European *swépnos (inherited)

← Proto-Indo-European *swep- (mention)

← Proto-Italic *swepnos (inherited)

← Latin somnus (inherited)

← Lithuanian sãpnas (cognate)

← Romanian somn (cognate)

→ Greek ύπνος (cognate)

→ Spanish sueño (cognate)

→ Italian sogno (link)

→ Italian sonnellino (mention)

→ Italian sonnifero (affix)

→ Italian sonniloquio (suffix)

→ Italian dissonnare (affix)

→ Portuguese sono (cognate)