nullify
英 ['nʌlɪfaɪ]
美['nʌlɪ'fai]
- vt. 使无效，作废；取消
英英释意
- 1. declare invalid;
- "The contract was annulled"
- "void a plea"
- 2. show to be invalid
- 3. make ineffective by counterbalancing the effect of;
- "Her optimism neutralizes his gloom"
- "This action will negate the effect of my efforts"