authoritative

Use in a sentence

au·thor·i·ta·tive

[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:
1595–1605; authorit(y) + -ative

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


1. official. 3. dogmatic, authoritarian.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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00:10
Authoritative is always a great word to know.
So is bezoar. Does it mean:
a gadget; dingus; thingumbob.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
Collins
World English Dictionary
authoritative (ɔːˈθɒrɪtətɪv) [Click for IPA pronunciation guide]
 
adj
1.  recognized or accepted as being true or reliable: an authoritative article on drugs
2.  exercising or asserting authority; commanding: an authoritative manner
3.  possessing or supported by authority; official: an authoritative communiqué
 
au'thoritatively
 
adv
 
au'thoritativeness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

authoritative
c.1600, "dictatorial" (a sense now restricted to authoritarian), from authority (q.v.). Meaning "possessing authority" is recorded from 1650s; that of "proceeding from proper authority" is from 1809.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Neither has authoritative leaders or a formal hierarchical structure.
The volume reveals a poet by turns charming and authoritative, masterful and
  humble, deftly evasive and ringingly quotable.
The auctioneer cut an imposing figure, nearly six feet tall in heels, her
  English-accented contralto crisply authoritative.
They may not be relied upon as authoritative interpretations.
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