wight n.

"something, anything," late 12c., from Old English awiht "aught, anything, something," literally "e'er a whit," from a- "ever" (from Proto-Germanic *aiwi- "ever," extended form of PIE root *aiw- "vital force, life; long life, eternity") + *wihti "thing, anything whatever" (see wight). In Shakespeare, Milton, and Pope, aught and ought occur indiscriminately. Chaucer used aughtwhere (adv.) "anywhere."

mid-14c., "evil, an evil act," also " a trifle," c. 1400, "nothingness;" early 15c., in arithmetic, "the number zero;" from noht, naht (pron.) "nothing" (late 12c.), from Old English nawiht "nothing," literally "no whit," from na "no" (from PIE root *ne- "not") + wiht "thing, creature, being" (see wight). Also see nought.

Cognate with Old Saxon neowiht "nothing," Old High German niwiht, Gothic ni waihts, Dutch niet, German nicht. It also developed an adjectival sense in Old English, "good for nothing," which by mid-16c. had focused to "morally bad, wicked," though the modern adjective is naughty.

"smallest particle," 1520s, from na whit "no amount" (c. 1200), from Old English nan wiht, from wiht "amount," originally "person, human being" (see wight).