An Etymological Dictionary of the German Language/Annotated/nackt
nackt, nackend, adjective, ‘naked, bare, nude,’ from the equivalent Middle High German nackt, nackent, Old High German nacchut, nahhut, adjective; corresponding to Dutch naakt, Anglo-Saxon nacod, English naked, Old Icelandic nǫkkverðr, Gothic naqaþs, with the same meaning; a participle derivative (see falt) naqe-dó from pre-Teutonic nogetó- (Old Irish nocht, ‘naked,’ from the primary form nokto-). In Indian the form nagná occurs with a participle na for ta; Old Slovenian nagŭ, Lithuanian nu̇gas, ‘naked,’ are formed without a suffix. Nothing further is known concerning the Aryan root nō̆g (allied to Latin nûdus for *novdus, *nogvidus?), which has a bearing on the history of civilisation, since it implies the correlative ‘non-naked,’ i.e. ‘clad,’ and thus assumes that a sort of dress was worn in the primitive Aryan period. See also bar.