Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “invalidate”

invalidate

verb [T]     /ɪnˈvælɪdeɪt/
to officially stop a document , contract , etc. being legally or officially acceptable : If you do not go to an approved garage , you are likely to invalidate a warranty on a new car . → Compare validate
invalidation noun [U]
(Definition of invalidate verb from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of invalidate

Definitions of “invalidate” in other dictionaries

Translations of “invalidate”

Word of the Day

drizzle

to pour liquid slowly over something, especially in a thin line or in small drops

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More