negation

noun

1 there should be confirmation—or negation—of the findings:

denial, contradiction, repudiation, disproving, refutation, refuting, rebuttal, countering, disclaiming;

nullification, cancellation, voiding, revocation, rescinding, abrogation, repeal, retraction;

Law disaffirmation;

rare disproval.

▷antonyms confirmation, affirmation, substantiation.

2 evil is not merely the negation of goodness:

opposite, reverse, antithesis, contrary, inverse, converse;

absence, lack, want, deficiency.

3 a life full of negation:

nothingness, nothing, nullity, blankness, void, non-existence, vacuity.

negation Oxford Dictionary of English