authoritative

英 [ɔː'θɒrɪtətɪv; -,teɪtɪv] 美[ə'θɔrətetɪv]

• adj. 有权威的；命令式的；当局的

1. having authority or ascendancy or influence;

"an important official"

"the captain's authoritative manner"

2. of recognized authority or excellence;

"the definitive work on Greece"

"classical methods of navigation"

3. sanctioned by established authority;

"an authoritative communique"

"the authorized biography"