5
canonical(adjective, accepted, official, authorized, recognized)
5
confirmed(adjective, good, sound, right, reasonable)
5
ex officio(expression, adjective, idiom, government, official)
5
firm
5
legal(adjective, good, sound, correct, right)
5
mighty(adjective, strong, powerful, chief, effective)
5
puissant(adjective, strong, powerful, effective, prevailing)
5
sanctioned(adjective, true, official, authorized)
5
scholarly(adjective, valid, sagacious)
5
telling(adjective, strong, sound, reasonable, energetic)
5
vigorous(adjective, strong, energetic, powerful, effective)
4
accepted(adjective, sound, correct, right, solid)
4
adept(adjective, expert, sagacious)
4
artistic(adjective, expert)
4
cogent(adjective, strong, sound, reasonable, energetic)
4
competent(adjective, strong, energetic, powerful, effective)
4
cute
4
determinative(adjective, sound, reasonable, rational, decide)
4
doctrinaire(adjective, opinionated, domineering, dogmatic)
4
domineering
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APASmart Define. (2015). authoritative thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/authoritative/thesaurus/synonyms
ChicagoSmart Define. 2015. "authoritative thesaurus" https://smartdefine.org/authoritative/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, authoritative thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/authoritative/thesaurus/synonyms>.
MLASmart Define. "authoritative thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/authoritative/thesaurus/synonyms>