Neutralize

1. To render neutral; to reduce to a state of neutrality.
2. (Chem.) To render inert or imperceptible the peculiar affinities of, as a chemical substance; to destroy the effect of; as, to neutralize an acid with a base.
3. To destroy the peculiar properties or opposite dispositions of; to reduce to a state of indifference or inefficiency; to counteract; to render ineffective; as, to neutralize parties in government; to neutralize efforts, opposition, etc.