neutralize

To make neutral.

To counterbalance or counteract the effect of; render ineffective.

To declare neutral and therefore inviolable during a war.

To make (a solution) neutral.

To cause (an acid or base) to undergo neutralization.

To counteract the effect of (a drug or toxin).

To remove as a threat, especially by killing.

In motor-racing, to give a neutral character to (a town or to a specified part of a road), that is, to arrange that the time used in passing through or over it is not to be counted in the race.

To render neutral; reduce to a state of neutrality between different parties Or opinions.