73 entries under right topic. ×

4
efficacious(adjective, good, strong, sound)
4
good(sound, reasonable, rational, genuine)
4
substantial(adjective, good, strong, sound)
3
attested(adjective, good, sound, reasonable)
3
bona fide(expression, adjective, good, sound, correct)
3
correct(adjective, good, sound, sensible)
3
real(adjective, clear, correct, firm)
3
unquestionable(adjective, correct, honest, exact)
3
well-founded(good, sound, reasonable, rational)
2
exact(adjective, good, open, correct)
2
genuine(adjective, good, clear, sound, correct)
2
in force(expression, good, sound, reasonable)
2
just(good, sound, reasonable, rational)
2
kosher(adjective, good, open, sound, correct)
2
logical(good, sound, reasonable, rational)
2
proper(adjective, good, sound, correct)
2
regular(adjective, correct, honest, perfect)
2
rightful(adjective, sound, correct, honest)
2
straight(adjective, open, sound, correct)
2
undeniable(adjective, clear, correct, firm)
11 years ago|12k views|share |citing 
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>