authoritative

authoritative
[ɔːˈθɒrɪtətɪv, -ˌteɪtɪv]
adjective
  1. able to be trusted as being accurate or true; reliable
    可信的;可靠的
    clear, authoritative information and advice.
    明确可靠的信息和建议。
    an authoritative source.
    可信任的来源。
    ■(of a text) considered to be the best of its kind and unlikely to be improved upon
    (文本)权威性的;完美的
    this is likely to become the authoritative study of the subject.
    这可能成为关于这个题目的权威性研究。
  2. commanding and self-confident; likely to be respected and obeyed
    有权威架子的;令人敬服的
    she had an authoritative air.
    她有一种居高临下的神态。
    his voice was calm and authoritative.
    他的声音冷静而威严。
    ■proceeding from an official source and requiring compliance or obedience
    官方的
    authoritative directives.
    官方指示。
派生
authoritatively
adverb
authoritativeness
noun
英语宝典
考试词汇表