Synonym: annul, avoid, invalidate, negate, neutralise, neutralize, quash, void. Similar words: qualify, pull in, life, lift, modify, cliff, specify, gratify. Meaning: ['nʌlɪfaɪ] 
v. 1. declare invalid 2. show to be invalid 3. make ineffective by counterbalancing the effect of.
v. 1. declare invalid 2. show to be invalid 3. make ineffective by counterbalancing the effect of. 31. What if some did not have faith? Will their lack of faith nullify God's faithfulness?