Authoritative
Authoritative adjective - Being the most accurate and apparently thorough.
Key and authoritative are semantically related. In some cases you can use "Key" instead an adjective "Authoritative".
Nearby Words: authority, authoritarian
Key
Key adjective - Coming before all others in importance.
Authoritative and key are semantically related. Sometimes you can use "Authoritative" instead an adjective "Key".
Mutual synonyms
Both words in one sentence
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Villain with Good Publicity: Up until they start carrying out pointlessly oppressive actions, the Empire's more authoritative rule has largely been seen as a step up from the Republic in the eyes of many citizens, and a key reason that a major Rebellion hasn't started since the Empire's formation.
Cite this Source
Key and Authoritative. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/authoritative/key
Authoritative & Key. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/authoritative/key>.
Key or Authoritative. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/authoritative/key.
Google Ngram Viewer shows how "authoritative" and "key" have occurred on timeline