invalidate
verbUK /ɪnˈvæl.ɪ.deɪt/ · US /ɪnˈvæl.əˌdeɪt/
Etymology First attested in 1649; borrowed from Middle French invalider, from invalide + -er. By surface analysis, in- + validate or invalid + -ate.
1
To make invalid. Especially applied to contract law.
- The circuit court judge's ruling was invalidated by a superior judge.
2
To make or declare (an argument, statement, or theory) unsound or erroneous; disprove.
3
To render invalid; discredit.
- Telling an angry person to "calm down" can invalidate their feelings.
- Antonyms
- validate
- Derived terms
- invalidator, microinvalidate