ˈlɪkwədeɪt nɪˈɡeɪt ˈnʌlɪfaɪ

make chemically neutral She neutralized the solution make ineffective by counterbalancing the effect of Her optimism neutralizes his gloom This action will negate the effect of my efforts make incapable of military action get rid of (someone who may be a threat) by killing The mafia liquidated the informer the double agent was neutralized