Synonyms of negating

1 Syllable

dump, ding, cross, quash, void, kill

2 Syllables

agin, redress, deny, annul, gainsay, retract, blackball, impugn, rebut, rescind, belie, repeal, undo, cancel

3 Syllables

vitiate, countercheck, disprove, stonewall, refute, controvert, traverse, reverse, revoke, oppose, frustrate, disallow, abolish, disaffirm, nullify, abate

4 Syllables

neutralize, negative, abrogate, antithetic

5 Syllables

contradictory, invalidate, annihilate