[] 非



negate
[ verb ]

1. be in contradiction with

<verb.stative> belie contradict

2. deny the truth of

<verb.communication> contradict contravene

3. prove negative; show to be false

<verb.cognition> contradict

4. make ineffective by counterbalancing the effect of

<verb.change> neutralise neutralize nullify
Her optimism neutralizes his gloom
This action will negate the effect of my efforts