köken: From Middle High German etewaʒ, from Old High German eddeshwaz, from edde- + hwaz. The first element is of obscure origin, but possibly related to Proto-Germanic *ehþau (“otherwise, or, but if”), source of modern oder (“or”). Compare Icelandic eitthvað, Dutch ietwat.
köken: From Middle Dutch iet, a contraction of earlier iewet, from Old Dutch iowiht. This Old Dutch compound is formed from Old Dutch ie- 'anything' and a second constituent corresponding to Middle Dutch wicht 'being, creature', earlier meaning 'thing'. Cognate with Limburgish get, Central Franconian jet, English aught. The suffix -s is taken from Old Dutch niets whose -s is an old partitive genitive…
köken: Etymology tree Proto-Indo-European *kʷ- Proto-Indo-European *kʷís Proto-Indo-European *kʷídder. Proto-Slavic *česo Old Polish co Proto-Indo-European *ḱe Proto-Indo-European *ís Proto-Indo-European *ḱís Proto-Balto-Slavic *śís Proto-Slavic *sьder. Old Polish -ś Old Polish coś Polish coś Inherited from Old Polish coś. By surface analysis, co + -ś. Compare Kashubian cos and Slovincian cesz.