1. (

• neutralize ,
• neutralise ,
• liquidate ,
• waste ,
• knock_off ,
• do_in

) get rid of (someone who may be a threat) by killing; "The mafia liquidated the informer"; "the double agent was neutralized" ;

2. (

• neutralize ,
• neutralise

) make incapable of military action ;

3. (

• neutralize ,
• neutralise ,
• nullify ,
• negate ,

) make ineffective by counterbalancing the effect of; "Her optimism neutralizes his gloom"; "This action will negate the effect of my efforts" ;

4. (

• neutralize ,
• neutralise

) make chemically neutral; "She neutralized the solution" ;