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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

creep

used with other nouns to describe the unexpected and often unwanted effects of a particular situation or trend

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sandwich woman

a woman in middle age who has to juggle caring for teenage children and ageing parents with a career

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