invalidate
//ɪnˈvælɪdeɪt//
Verb
invalidateInfinitive
invalidatePresent tense
invalidatedPast tense
invalidatedPast participle
invalidatingPresent participle
invalidatesThird-person singular
1
To make something legally or officially null and void; to deprive of legal force or effectiveness.
The court invalidated the contract because it was signed under duress.
2
To prove or show that something is false, incorrect, or without foundation.
The new evidence invalidated the researcher's original hypothesis.
3
To weaken or destroy the validity, authority, or credibility of something.
The new evidence invalidated the researcher's original hypothesis.