neutralize
v 1: make politically neutral
2: make ineffective by counterbalancing the effect of; "Her
optimism neutralizes his gloom" [syn: {nullify}]
3: oppose and mitigate the effects of by contrary actions;
"This will counteract the foolish actions of my
colleagues" [syn: {counteract}, {countervail}, {counterbalance}]
4: make incapable of military action
5: make chemically neutral; "She neutralized the solution"