- 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.
Origin of authoritative
SynonymsSee more synonyms on Thesaurus.com
1. official. 3. dogmatic, authoritarian.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for authoritatively
Some authoritatively explained that his death is being used as a distraction from the current political transition.Hosni Mubarak Rumors Swirl Before Election Results Announced
June 20, 2012
“He wanted to write about it authoritatively,” Wilentz said.A Brief History of the Presidential Memoir
November 8, 2010
"Both of you may stop now," said Professor Maxon authoritatively.The Monster Men
Edgar Rice Burroughs
“Go around to Helen, and—take that gun,” she said authoritatively.The Law-Breakers
She was moving towards the door when Artois stopped her authoritatively.A Spirit in Prison
"Stay—I cannot permit this," interposed the Chief Justice, authoritatively.Roland Cashel
Charles James Lever
"The cause of failure was very different," said O'Hallo-ran, authoritatively.The Knight Of Gwynne, Vol. II (of II)
Charles James Lever
- recognized or accepted as being true or reliablean authoritative article on drugs
- exercising or asserting authority; commandingan authoritative manner
- possessing or supported by authority; officialan authoritative communiqué
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 authoritatively
Online Etymology Dictionary, © 2010 Douglas Harper