invalidate
/ɪnˈvælɪdeɪt/
verb
- To make something no longer legally or officially acceptable.
- A missing signature will invalidate the entire document.
- If you break the seal, it invalidates the warranty.
- The court's decision invalidated the old law.
- To prove that something is false or incorrect.
- His alibi was invalidated by the security camera footage.
- The experiment invalidated the hypothesis that sugar causes hyperactivity.
- New evidence invalidated the earlier theory.