Proto-IE: *swepǝ- (Gr h-)
Meaning: to sleep
Hittite: sup-, supparija- (I) 'schlafen' (Friedrich 198)
Tokharian: A ṣpäṃ, B ṣpane `Schlaf'
Old Indian: svapiti, svápati `to sleep, fall asleep', pass. supyate, ptc. suptá; svápna- m. `sleep, dream'; svápnya- n. `vision in a dream'
Avestan: xʷap- `schlafen'; xʷafna- m. `Schlaf, Traum'
Armenian: khun, gen. khnoy `Schlaf'
Old Greek: hǘpno-s m. `Schlaf'
Latin: sōpīre `einschläfern', sopor, -ōris m. `Schlaf, Schläfrigkeit'; somnus, -ī m. `Schlaf', somnium n. `Traum'
Celtic: OIr sūan `Schlaf'; Cymr hūn `Schlaf', an-hunedd `insomnia', Corn, Bret hun 'Schlaf'
Albanian: ǵumɛ `Schlaf'
Russ. meaning: спать
piet-prnum,piet-meaning,piet-hitt,piet-tokh,piet-ind,piet-avest,piet-arm,piet-greek,piet-slav,piet-balt,piet-germ,piet-lat,piet-celt,piet-alb,piet-rusmean,piet-refer,