[ uh-thawr-i-tey-tiv, uh-thor- ]
See synonyms for: authoritativeauthoritativelyauthoritativeness on

  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.

  1. 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

Other words for authoritative

Other words from authoritative

  • 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

Words Nearby authoritative Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use authoritative in a sentence

British Dictionary definitions for authoritative


/ (ɔːˈθɒrɪtətɪv) /

  1. recognized or accepted as being true or reliable: an authoritative article on drugs

  2. exercising or asserting authority; commanding: an authoritative manner

  1. possessing or supported by authority; official: an authoritative communiqué

Derived forms of authoritative

  • 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