definition of
neutralise

[1] #1 neutralise v. [neutralize, 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". wn

[2] #2 neutralise v. [neutralize] make incapable of military action. wn

[3] #3 neutralise v. [neutralize, nullify, negate] make ineffective by counterbalancing the effect of; "Her optimism neutralizes his gloom"; "This action will negate the effect of my efforts". wn

[4] #4 neutralise v. [neutralize] make chemically neutral; "She neutralized the solution". wn