authoritative

[uh-thawr-i-tey-tiv, uh-thor-]
adjective
  1. having due authority; having the sanction or weight of authority: an authoritative opinion.
  2. 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.
  3. having an air of authority; accustomed to exercising authority; positive; peremptory; dictatorial: said with an authoritative air.

Origin of authoritative

First recorded in 1595–1605; authorit(y) + -ative
Related formsau·thor·i·ta·tive·ly, adverbau·thor·i·ta·tive·ness, nounnon·au·thor·i·ta·tive, adjectivenon·au·thor·i·ta·tive·ly, adverbnon·au·thor·i·ta·tive·ness, nounun·au·thor·i·ta·tive, adjectiveun·au·thor·i·ta·tive·ly, adverbun·au·thor·i·ta·tive·ness, noun

Synonyms for authoritative

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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 unauthoritative writers.

    Shakespearean Playhouses

    Joseph Quincy Adams

  • It must have unity enough for that; it must be much more than a mere leisurely, unauthoritative conference of representatives.

    What is Coming?

    H. G. Wells


British Dictionary definitions for unauthoritative

authoritative

adjective
  1. recognized or accepted as being true or reliablean authoritative article on drugs
  2. exercising or asserting authority; commandingan authoritative manner
  3. possessing or supported by authority; officialan authoritative communiqué
Derived Formsauthoritatively, adverbauthoritativeness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for unauthoritative

authoritative

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