From Middle English not, nat, variant of noght, naht, from Old English *nōht, nāht, short for nōwiht, nāwiht, corresponding to ne + ōwiht, āwiht, corresponding to ā + wiht.
Cognate with Scots nat, naucht, Saterland Frisian nit ("not"), West Frisian net ("not"), Dutch niet ("not"), German nicht ("not"). Compare nought, naught and aught. More at no, wight, whit.
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