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We found 32 dictionaries with English definitions that include the word authoritative:
Click on the first link on a line below to go directly to a page where "authoritative" is defined.

General (28 matching dictionaries)

1. authoritative: Merriam-Webster.com [home, info]
2. authoritative: Oxford Dictionaries [home, info]
3. authoritative: American Heritage Dictionary of the English Language [home, info]
4. authoritative: Collins English Dictionary [home, info]
5. authoritative: Vocabulary.com [home, info]
6. authoritative: Macmillan Dictionary [home, info]
7. Authoritative, authoritative: Wordnik [home, info]
8. authoritative: Cambridge Advanced Learner's Dictionary [home, info]
9. authoritative: Wiktionary [home, info]
10. authoritative: Webster's New World College Dictionary, 4th Ed. [home, info]
11. authoritative: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. authoritative: Infoplease Dictionary [home, info]
13. Authoritative, authoritative: Dictionary.com [home, info]
14. authoritative: UltraLingua English Dictionary [home, info]
15. authoritative: Cambridge Dictionary of American English [home, info]
16. Authoritative: Wikipedia, the Free Encyclopedia [home, info]
17. Authoritative: Online Plain Text English Dictionary [home, info]
18. authoritative: Webster's Revised Unabridged, 1913 Edition [home, info]
19. authoritative: Rhymezone [home, info]
20. Authoritative: AllWords.com Multi-Lingual Dictionary [home, info]
21. authoritative: Webster's 1828 Dictionary [home, info]
22. authoritative: Free Dictionary [home, info]
23. authoritative: Mnemonic Dictionary [home, info]
24. authoritative: WordNet 1.7 Vocabulary Helper [home, info]
25. authoritative: LookWAYup Translating Dictionary/Thesaurus [home, info]
26. authoritative: Dictionary/thesaurus [home, info]

Art (1 matching dictionary)

27. authoritative: ODLIS: Online Dictionary of Library and Information Science [home, info]

Business (1 matching dictionary)

28. Authoritative (Disambiguation), authoritative: Legal dictionary [home, info]

Computing (1 matching dictionary)

29. authoritative: Encyclopedia [home, info]

Slang (1 matching dictionary)

30. authoritative: Urban Dictionary [home, info]

(Note: See authoritativeness for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (authoritative) ▸ adjective:  sanctioned by established authority ("An authoritative communique") ▸ adjective:  having authority or ascendancy or influence ("The captain's authoritative manner") ▸ adjective:  of recognized authority or excellence ▸ Also see authoritativeness ▸ Words similar to authoritative ▸ Usage examples for authoritative ▸ Popular nouns described by authoritative ▸ Words that often appear near authoritative ▸ Rhymes of authoritative ▸ Invented words related to authoritative