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unofficial

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adjective unofficial pronunciation in American English /ˌʌnəˈfɪʃ(ə)l/
  1. not organized or formally approved by anyone in authority

    The union is to take unofficial strike action next Tuesday.

    1. a.
      not having an official position or status

      He has become the president's unofficial spokesman.

derived word

unofficially

adverb

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chicken raffle

any random process, such as a competition in which a name is drawn from a hat

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