1. Make a document, agreement or procedure no longer valid under the relevant rules.
2. Show that a conclusion or argument lacks the support or conditions required for it to hold.
Use it for
Words that belong together
- invalidate a contract
- invalidate a result
On the page
Failure to obtain consent invalidated the authorization under the institution’s own policy.
A single ineligible ballot would not automatically invalidate the entire election.
Nearby words
Opposite meanings
Related words
Word forms
- Base
- invalidate
- Past tense
- invalidated
- Past participle
- invalidated
- Present participle
- invalidating
Full tense & aspect guide
- Present
- invalidate
- Present continuous
- am/is/are invalidating
- Present perfect
- have/has invalidated
- Present perfect continuous
- have/has been invalidating
- Past
- invalidated
- Past continuous
- was/were invalidating
- Past perfect
- had invalidated
- Past perfect continuous
- had been invalidating
- Future
- will invalidate
- Future continuous
- will be invalidating
- Future perfect
- will have invalidated
- Future perfect continuous
- will have been invalidating
Choose the auxiliary that agrees with your subject. These are constructions of one word, not separate entries.
Usage notes
Primary category: academic / formal. Forms: invalidate; invalidates; invalidated; invalidated; invalidating Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: evaluation, criticism. Disciplines: general academic writing. Commonness: moderately common. Third-person singular: invalidates.
Practice this word in a sentenceYour margin notes
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