neutralise (Verb) — Get rid of (someone who may be a threat) by killing. ex. "the double agent was neutralised"
neutralise (Verb) — Make incapable of military action.
neutralise (Verb) — Make ineffective by counterbalancing the effect of. ex. "Her optimism neutralises his gloom"
neutralise (Verb) — Make chemically neutral. ex. "She neutralised the solution"
neutralise (Verb) — Make politically neutral and thus inoffensive. ex. "The treaty neutralised the small republic"
neutralise (Verb) — Oppose and mitigate the effects of by contrary actions. ex. "This will neutralise the foolish actions of my colleagues"