authoritative [ uh- thawr-i-tey-tiv, uh- thor-] SYNONYMS | EXAMPLES | WORD ORIGIN adjective having due authority; having the sanction or weight of authority: an authoritative opinion. substantiated or supported by documentary evidence and accepted by most authorities in a field: an authoritative edition of Shakespeare; an authoritative treatment of a subject. having an air of authority; accustomed to exercising authority; positive; peremptory; dictatorial: said with an authoritative air. Related forms au·thor·i·ta·tive·ly, adverb au·thor·i·ta·tive·ness, noun non·au·thor·i·ta·tive, adjective non·au·thor·i·ta·tive·ly, adverb non·au·thor·i·ta·tive·ness, noun un·au·thor·i·ta·tive, adjective un·au·thor·i·ta·tive·ly, adverb un·au·thor·i·ta·tive·ness, noun Synonyms for authoritative
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for unauthoritative Historical Examples of unauthoritative
He gives no evidence, and the statement seems to be merely a repetition from earlier and
It must have unity enough for that; it must be much more than a mere leisurely,
unauthoritative conference of representatives. British Dictionary definitions for unauthoritative adjective recognized or accepted as being true or reliable an authoritative article on drugs exercising or asserting authority; commanding an authoritative manner possessing or supported by authority; official an authoritative communiqué Derived Forms authoritatively, adverb authoritativeness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for unauthoritative adj.
c.1600, "dictatorial" (a sense now restricted to
authoritarian), from Medieval Latin authoritativus (see authority). Meaning "possessing authority" is recorded from 1650s; that of "proceeding from proper authority" is from 1809. Related: Authoritatively; authoritativeness.
Online Etymology Dictionary, © 2010 Douglas Harper