neutralize

verb

1. make politically neutral and thus inoffensive

   verb.social

   Examples

   The treaty neutralized the small republic.

   Source: WordNet 3.0

2. make ineffective by counterbalancing the effect of

   verb.change

   Examples

   Her optimism neutralizes his gloom.

   Synonyms negate neutralise nullify

   Source: WordNet 3.0

3. oppose and mitigate the effects of by contrary actions

   verb.social

   Synonyms counteract counterbalance countervail

   Source: WordNet 3.0

4. get rid of (someone who may be a threat) by killing

   verb.contact

   Examples

   The double agent was neutralized.

   Synonyms do in knock off liquidate neutralise waste

   Source: WordNet 3.0

5. make incapable of military action

   verb.competition

   Synonyms neutralise

   Source: WordNet 3.0

6. make chemically neutral

   verb.change

   Examples

   She neutralized the solution.

   Source: WordNet 3.0

7. To render neutral; to reduce to a state of neutrality.

   verb

   Source: webster1913