Greek ύπνος

← English sweven (cognate)

← Spanish sueño (cognate)

← Ancient Greek ὕπνος (inherited)

← Proto-Indo-European *swep- (root)

← Proto-Indo-European *swépnos (inherited)

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

← Italian sonno (cognate)

← Latvian sapnis (cognate)

← Sanskrit स्वप्न (cognate)

→ Greek υπνοβάτης (affix)