Authoritative
Authoritative adjective - Being the most accurate and apparently thorough.
Usage example: this book is considered the most authoritative source on that subject
Classic is a synonym for authoritative. In some cases you can use "Classic" instead an adjective "Authoritative".
Nearby Words: authority, authoritarian
Classic
Classic adjective - Being the most accurate and apparently thorough.
Usage example: the classic study of the alienation of the individual in modern urban society
Authoritative is a synonym for classic in definitive topic. Sometimes you can use "Authoritative" instead an adjective "Classic".
Mutual synonyms
Both words in one sentence
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Instantly recognizable for his iconic roles, craggy features and authoritative, gravelly voice, Olmos first came to prominence as the mysterious Detective Gaff in the sci-fi classic Blade Runner.
Source: Creator / Edward James Olmos
Cite this Source
Classic and Authoritative. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/authoritative/classic
Authoritative & Classic. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/authoritative/classic>.
Classic or Authoritative. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/authoritative/classic.
Google Ngram Viewer shows how "authoritative" and "classic" have occurred on timeline