unofficial

Definitions of unofficial
  1. adjective
    not having official authority or sanction
    “a sort of unofficial mayor”
    “an unofficial estimate”
    “he participated in an unofficial capacity”
    Synonyms:
    unauthorised, unauthorized
    not endowed with authority
    drumhead, summary
    performed speedily and without formality
    informal, loose
    not officially recognized or controlled
    unauthorised, unauthorized, wildcat
    without official authorization
    unsanctioned
    without explicit official permission
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    Antonyms:
    official
    having official authority or sanction
    authorised, authorized
    endowed with authority
    authorised, authoritative, authorized
    sanctioned by established authority
    ex officio
    by virtue of an office or position
    formal
    characteristic of or befitting a person in authority
    formalised, formalized
    given formal standing or endorsement; made official or legitimate by the observance of proper procedures
    semiofficial
    having some official authority or sanction
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  2. adjective
    not officially established
    “the early election returns are unofficial
    Synonyms:
    unconfirmed
    not finally established or settled
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