[ne.gate] vt ne.gat.ed ; ne.gat.ing [L negatus, pp. of negare to say no, deny, fr. neg- no, not (akin to ne- not)--more at no] (ca. 1623) 1: to deny the existence or truth of
2: to cause to be ineffective or invalid syn see nullify -- negate n -- ne.ga.tor n