valid is on the Academic Word List.

Pronunciation

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Adjective

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Positive
valid

Comparative
more valid

Superlative
most valid

  1. If something is valid, it is correct, appropriate, and acceptable.
    I'm sorry sir, your driver's license is not valid.
    I think we should listen to her. She makes a valid argument.
    To log in, you need a valid password.

Antonyms

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