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authoritative

/əˈθɔɹəˌteɪtɪv/ · 13 letters · 9 distinct letters

  1. adjective

    having authority or ascendancy or influence

    an important official

  2. adjective

    endowed with authority

    an authoritative communique

  3. adjective

    of recognized authority or excellence

    the definitive work on Greece

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authoritative: definition, pronunciation and puzzle history · Nectary