4
efficacious(adjective, good, strong, sound, right)
4
energetic(adjective, strong, powerful, effective, dynamic)
4
expert(adjective, expert, sagacious)
4
good(sound, right, reasonable, rational, genuine)
4
governing(adjective, strong, superior, powerful, governmental)
4
imperial(adjective, official, authorized)
4
learned(adjective, valid)
4
mandatory(adjective, official, authorized)
4
overbearing
4
overruling(verb, strong, energetic, government, effective)
4
prestigious
4
professional(adjective, expert)
4
received
4
responsible(adjective, charge, open, honest, sensible)
4
substantial(adjective, good, strong, sound, right)
4
unambiguous(adjective, clear, precise, valid, decisive)
3
adroit(adjective, expert)
3
assertive(adjective, domineering)
3
attested(adjective, good, sound, right, reasonable)
3
authenticated(adjective, original, genuine, reliable, trustworthy)
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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>