Read the dictionary definition of neutralize. All definitions for this word.
1. make chemically neutral
1. She neutralized the solution
2. make ineffective by counterbalancing the effect of
1. Her optimism neutralizes his gloom
2. This action will negate the effect of my efforts
3. make incapable of military action
4. get rid of (someone who may be a threat) by killing
1. The mafia liquidated the informer
2. the double agent was neutralized
5. make politically neutral and thus inoffensive
1. The treaty neutralized the small republic
6. oppose and mitigate the effects of by contrary actions
1. This will counteract the foolish actions of my colleagues