形容词

1. 权威的;威严的;有威信的
Someone or something that is authoritative gives an impression of power and importance and is likely to be obeyed.

1. sanctioned by established authority

e.g. an authoritative communique
the authorized biography

Synonym: authorizedauthorised

2. having authority or ascendancy or influence

e.g. an important official
the captain's authoritative manner

Synonym: important

3. of recognized authority or excellence

e.g. the definitive work on Greece
classical methods of navigation

Synonym: classicalclassicdefinitive