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authoritative adjective

  /ɔ-/ , /ɔːˈθɒɹɪtətɪv/ , /ɔːˈθɒɹɪtɪv/ , /əˈθɑɹɪtɪv/ , /əˈθɑɹɪˌteɪtɪv/ , /əˈθɔɹɪtɪv/ , /əˈθɔɹɪˌteɪtɪv/
  • Highly accurate or definitive; treated or worthy of treatment as a scholarly authority.
autorisé, autoritaire, majeur
  • Arising or originating from a figure of authority.
autoritaire, autorisé, officiel
  • Having a commanding style.
magistériel

authoritatively adverb

  /ɔˈθɔɹəˌteɪtɪvli/ , /ɔːˈθɒɹɪtətɪvli/
  • In an authoritative manner; with authority.
autoritairement

authoritatively

impérativement
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