41 entries under reasonable topic. ×

2
binding(sound, rational, unconditional, dictatorial)
2
compelling(adjective, strong, sound, energetic)
2
genuine(adjective, good, clear, sound, correct)
2
in force(expression, good, sound, right)
2
just(good, sound, right, rational)
2
kosher(adjective, good, open, sound, correct)
2
logical(good, sound, right, rational)
2
right(adjective, good, sound, correct)
2
well-grounded(good, sound, right, rational)
1
efficient(good, sound, right, rational)
1
original(good, sound, right, pure)
1
pure(adjective, good, sound, correct, right)
1
rational
1
ultimate(sound, rational, precise, decisive)
0
defensible(sound, rational)
0
justifiable(sound, rational)
0
stringent(good, sound, right, rational)
0
tested(good, sound, right, rational)
0
unadulterated(good, sound, right, rational)
0
unanswerable(good, sound, right, rational)
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>