Laxi Dictionary

American Dictionary

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Definition invalidate in American English

invalidate verb

[transitive] verb
/ɪnˈvælɪˌdeɪt/
1

to make something such as a document, contract, or process no longer legally effective

Example

Failure to report any changes in your situation may invalidate your insurance policy.

Synonyms and related words
acquit acquittal affiliation order
2

to prove that an argument or opinion is wrong

Example

This study invalidates their earlier research.

Synonyms and related words
dispute disprove debunk
Definition invalidate in American English