helvete.

From Old Swedish hælffwætte, hælvīte, hælvīt, helvīte, from Old Norse helvíti, comprising of hel (“the death, underworld”) + vite (“penalty, punishment”), literally “penalty/punishment in death”, thought to stem from a Christian Pan-Germanic construction as Proto-Germanic *haljōwītiją, then likely a calque from a West Germanic language, or an earlier Proto-West Germanic *halljawītī, since the Norse were the last major Germanic branch to get Christianized (the first Norse Christians appear in the late 8th century, give or take). The term appears prior to Old Norse in Old English hellewite, Old Saxon helliwīti, Old High German helliwīzī, hellawīzī. The fore element, hel, originally means both “the death” and “underworld”, and is also used for the Norse personification of death, the goddess Hel. Compare Swedish ihjäl (“to death”, literally “to the death, to the underworld”), from Late Old Swedish ihiæl, from Old East Norse, Old Swedish, and Old Danish i hæl, also as Late Old Danish i hiel, Danish ihjel, Old West Norse í hel. It ultimately stems from the same root as hölja (“to cover”), from Proto-Germanic *haljō, ultimately from Proto-Indo-European *ḱel- (“to cover, hide, conceal”), which is used here in regards to burrying the dead and believing them to reside underground in the “underworld”.

From Old Swedish hælffwætte, hælvīte, hælvīt, helvīte, from Old Norse helvíti, comprising of hel (“the death, underworld”) + vite (“penalty, punishment”), literally “penalty/punishment in death”, thought to stem from a Christian Pan-Germanic construction as Proto-Germanic *haljōwītiją, then likely a calque from a West Germanic language, or an earlier Proto-West Germanic *halljawītī, since the Norse were the last major Germanic branch to get Christianized (the first Norse Christians appear in the late 8th century, give or take). The term appears prior to Old Norse in Old English hellewite, Old Saxon helliwīti, Old High German helliwīzī, hellawīzī. The fore element, hel, originally means both “the death” and “underworld”, and is also used for the Norse personification of death, the goddess Hel. Compare Swedish ihjäl (“to death”, literally “to the death, to the underworld”), from Late Old Swedish ihiæl, from Old East Norse, Old Swedish, and Old Danish i hæl, also as Late Old Danish i hiel, Danish ihjel, Old West Norse í hel. It ultimately stems from the same root as hölja (“to cover”), from Proto-Germanic *haljō, ultimately from Proto-Indo-European *ḱel- (“to cover, hide, conceal”), which is used here in regards to burrying the dead and believing them to reside underground in the “underworld”.