←
Avestan 𐬓𐬀𐬟𐬥𐬀 (cognate)
←
Old English swefn (cognate)
←
Old Church Slavonic сънъ (cognate)
←
Ancient Greek ὕπνος (cognate)
←
Proto-Indo-Iranian *swápnas (inherited)
←
Proto-Indo-European *swep- (root)
←
Proto-Indo-European *swépnos (inherited)
←
Proto-Indo-European *swep- (mention)
→
Avestan 𐬓𐬀𐬟𐬥𐬀 (cognate)
→
Assamese সপোন (derived)
→
Assamese সপান (derived)
→
Ancient Greek ὕπνος (cognate)
→
Early Assamese স্বপন (learned borrowing)
→
Maithili सपना (derived)
→
Maithili 𑒮𑒣𑒢𑒰 (derived)