Green’s Dictionary of Slang

(US, orig. milit.) no! no to...!

1966		F. Elkins diary in Elkins Heart of a Man (1973) 29: ‘You’re going to explode. Eject! Eject!’ ‘Negs.’.
1969		D. Pendleton Executioner (1973) 62: ‘Are they in official vehicle?’ ‘Neg, neg. Plainjanes, brown Pontiac. But they’re fuzzy, no mistake.’.
1985		Eble Campus Sl. Apr. 6: Neg—no. Clipping of negative....‘Neg that.’.
1988		D. Poyer Med 409: Negat, flight leader, negat! We have firm word no combat aircraft over land.