aught n.1

also *ayu-, Proto-Indo-European root meaning "vital force, life; long life, eternity."

It forms all or part of: age; aught (n.1) "something; anything;" aye (adv.) "always, ever;" Ayurvedic; coetaneous; coeval; each; eon; eternal; eternity; ever; every; ewigkeit; hygiene; longevity; medieval; nay; never; no; primeval; sempiternal; tarnation; utopia. 

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit ayu- "life;" Avestan aiiu "age, life(time);" Greek aiōn "age, vital force; a period of existence, a lifetime, a generation; a long space of time," in plural, "eternity;" Latin aevum "space of time, eternity;" Gothic aiws "age, eternity," Old Norse ævi "lifetime," German ewig "everlasting," Old English a "ever, always."  

Old English wiht "living being, creature, person; something, anything," from Proto-Germanic *wihti- (source also of Old Saxon wiht "thing, demon," Dutch wicht "a little child," Old High German wiht "thing, creature, demon," German Wicht "creature, little child," Old Norse vettr "thing, creature," Swedish vätte "spirit of the earth, gnome," Gothic waihts "something"), from PIE *wekti- "thing, creature" (source also of Old Church Slavonic vešti "a thing"). Not related to the Isle of Wight, which is from Latin Vectis (c. 150), originally Celtic, possibly meaning "place of the division."