Bing found the following results
  1. AUTHORITATIVE | English meaning - Cambridge Dictionary

  2. Authoritative Definition & Meaning - Merriam-Webster

  3. AUTHORITATIVENESS Synonyms: 133 Similar and Opposite …

  4. AUTHORITATIVE definition | Cambridge English Dictionary

  5. authoritativeness - Wiktionary, the free dictionary

  6. AUTHORITATIVE Definition & Meaning | Dictionary.com

  7. Authoritative - Definition, Meaning & Synonyms

  8. Authoritativeness - definition of Authoritativeness by The Free …

  9. AUTHORITATIVE definition and meaning | Collins English

  10. authoritative adjective - Definition, pictures, pronunciation and …