This Proto-Slavic entry contains reconstructed words and roots. As such, the term(s) in this entry are not directly attested, but are hypothesized to have existed based on comparative evidence.



From Proto-Indo-European *sup-, from *swep- (to sleep). Cognate with Sanskrit स्वपति (svápati), स्वपिति (svápiti, to sleep), Avestan 𐬓𐬀𐬟𐬯𐬀𐬌𐬙𐬌(xᵛafsaiti, to sleep), Latin sōpīre (to fall asleep), Proto-Germanic *swefaną (to sleep), Old English swefan (to sleep) (whence obsolete English asweve (to put to sleep, to stupefy)). Also cognate with Proto-Germanic *swefnaz, Ancient Greek ὕπνος (húpnos), Latin somnus, Old Irish súan. See also Proto-Slavic *sъ̀nъ (sleep, dream).


*sъpati impf[1][2]

  1. to sleep



Further readingEdit

  • Černyx, P. Ja. (1999), “спать”, in Istoriko-etimologičeskij slovarʹ russkovo jazyka [Historical-Etymological Dictionary of the Russian Language] (in Russian), volume 2, 3rd reprint edition, Moscow: Russkij jazyk, page 192
  • Vasmer (Fasmer), Max (Maks) (1964–1973), “спать”, in Etimologičeskij slovarʹ russkovo jazyka [Etymological Dictionary of the Russian Language] (in Russian), translated from German and supplemented by Trubačóv Oleg, Moscow: Progress


  1. ^ Derksen, Rick (2008), “*sъpati”, in Etymological Dictionary of the Slavic Inherited Lexicon (Leiden Indo-European Etymological Dictionary Series; 4), Leiden, Boston: Brill, →ISBN, page 481
  2. ^ Kapović, Mate (2007), “The Development of Proto-Slavic Quantity”, in Wiener Slavistisches Jahrbuch[1], University of Vienna, page 6: “*sъpa̋ti”