invalidate

Word parts

in- + validate

Pronunciation

• (UK) IPA ^(key): /ˌɪnˈvæl.ɪ.deɪt/
• (US) IPA ^(key): /ɪnˈvæl.əˌdeɪt/

• Audio (US)

  (file)

Verb

Plain form invalidate

Third-person singular invalidates

Past tense invalidated

Past participle invalidated

Present participle invalidating

1. If you invalidate something, you make it invalid.
   • Antonym: validate