invalid

adjective
UK: /ɪnˈvælɪd/
US: /ɪnˈvælɪd/

  1. Not legally or officially acceptable.

    1. My driver's license is invalid now.
    2. The contract became invalid because it lacked a signature so we need to renew it.

  2. Not based on facts or logic; not true or correct.

    1. That is an invalid argument for me.
    2. Her reasons for not attending were deemed invalid by the committee members.

Synonyms

cancel null nullify unsound void
invalid transitive-verb

  1. To officially state that something is not correct or allowed.

    1. The court invalidated the contract.
    2. The election results were invalidated due to voting irregularities and we will have a new vote.

Frequently Asked Questions

The word "invalid" in English means: Not legally or officially acceptable., Not based on facts or logic; not true or correct..

The phonetic transcription of "invalid" is /ɪnˈvælɪd/ in British English and /ɪnˈvælɪd/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "invalid": cancel, null, nullify, unsound, void.

Example usage of "invalid": "My driver's license is invalid now.". More examples on the page.