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1. Oxford American Dictionary

   authoritative

   • IPA[əˈTHôrəˌtādiv]

   美式

   • adj.
     able to be trusted as being accurate or true; reliable；(of a text) considered to be the best of its kind and unlikely to be improved upon
2. • 釋義

   adj.

   形容詞

   • 1. able to be trusted as being accurate or true; reliable clear, authoritative information and advice an authoritative source 同義詞 reliable, dependable, trustworthy, good, sound, ... 更多authentic, valid, well founded, attested, certified, verifiable, accurate, factual, from the horse's mouth反義詞 unreliable
   • ▪ (of a text) considered to be the best of its kind and unlikely to be improved upon the authoritative study of mollusks 同義詞 definitive, most reliable, best, most scholarly, classic, ... 更多authorized, accredited, recognized, accepted, approved, sanctioned
   • 2. commanding and self-confident; likely to be respected and obeyed his voice was calm and authoritative she had an authoritative air 同義詞 self-assured, assured, self-confident, confident, sure of oneself, ... 更多commanding, imposing, masterful, magisterial, lordly, assertive, dogmatic, peremptory, arrogant, dominating, domineering, imperious, overbearing, bossy, authoritarian反義詞 timid, diffident
   • ▪ proceeding from an official source and requiring compliance or obedience authoritative directives