sweven:

From Middle English, from Old English swefn ?(“sleep, dream, vision”), from Proto-Germanic *swefn?, *swefnaz ?(“sleep”), from Proto-Indo-European *swépnos, *súpnos ?(“dream”), from Proto-Indo-European *swep- ?(“to sleep”). Cognate with Dutch suf ?(“drowsy”), Middle High German swēb ?(“sleep”), Danish s?vn ?(“sleep”), Icelandic svefn ?(“sleep”), Norwegian s?vn ?(“sleep”), Swedish s?mn ?(“sleep”), Latin somnus ?(“sleep, slumber, drowsiness”), Sanskrit ?????? ?(svápna), Ancient Greek ?πνο? ?(húpnos).