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authoritative

[uh-thawr-i-tey-tiv, uh-thor-] /əˈθɔr ɪˌteɪ tɪv, əˈθɒr-/
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
1595-1605; authorit(y) + -ative
Related forms
authoritatively, adverb
authoritativeness, noun
nonauthoritative, adjective
nonauthoritatively, adverb
nonauthoritativeness, noun
unauthoritative, adjective
unauthoritatively, adverb
unauthoritativeness, noun
Synonyms
1. official. 3. dogmatic, authoritarian.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for authoritative
  • The auctioneer cut an imposing figure, nearly six feet tall in heels, her English-accented contralto crisply authoritative.
  • Today's figures are considered more authoritative and comprehensive.
  • Again, I don't claim my answer to be authoritative.
  • The volume reveals a poet by turns charming and authoritative, masterful and humble, deftly evasive and ringingly quotable.
  • Encyclicals are the most authoritative documents a pope can issue.
  • It ended as a statement, bold, authoritative and lasting.
  • It was the Cronkite that viewers revered: friendly, unpretentious, authoritative and well-prepared.
  • They will give you an authoritative answer from their perspectives.
  • It is hard to be authoritative when the authors cannot agree.
  • Although journalism is often authoritative, it is often compiled on the run.
British Dictionary definitions for authoritative

authoritative

/ɔːˈθɒrɪtətɪv/
adjective
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
Derived Forms
authoritatively, adverb
authoritativeness, 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
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Word Origin and History for 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
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