authoritatively

/əˈθɔrəˌteɪtɪvli/
adverb
  1. In a way that shows or uses power or the right to give orders.
    • She walked into the room authoritatively and assigned everyone their tasks.
    • The judge ruled authoritatively, ending the debate in the courtroom.
    • The general spoke authoritatively, and every soldier obeyed instantly.
  2. In a way that shows expert knowledge or confidence.
    • The guide explained the history of the castle authoritatively, impressing the tourists.
    • The professor answered the question authoritatively, citing several studies.
    • He can speak authoritatively about car engines because he has worked on them for years.
Antonyms
What does "authoritatively" mean? | whatsthatwordmean | whatsthatwordmean