Noah Webster's Dictionary (v. t.) To weaken or lessen; to destroy the authority of; to render useless; as, to invalidate an agreement or argument.

Multi-Version Concordance Invalidate (1 Occurrence) Galatians 3:17 Now I say this. A covenant confirmed beforehand by God in Christ, the law, which came four hundred thirty years after, does not annul, so as to make the promise of no effect. (See NAS)