75 entries under sound topic. ×

3
determinative(adjective, right, reasonable, honest)
3
pure(adjective, right, reasonable, honest)
3
stringent(adjective, right, reasonable, severe)
3
tested(adjective, right, reasonable, rational)
2
analytical(adjective, clear, reasonable, honest)
2
coherent(clear, reasonable, sensible, rational)
2
commonsense(reasonable, rational)
2
consequent(clear, reasonable, sensible, rational)
2
consistent(clear, reasonable, sensible, rational)
2
germane(clear, reasonable, appropriate, sensible)
2
lucid(clear, reasonable, sensible, rational)
2
perceptive(clear, reasonable, sensible, rational)
2
proven(adjective, good, right, reasonable)
2
ratiocinative(adjective, clear, logical, systematic)
2
ultimate(adjective, right, reasonable, rational)
2
unanswerable(adjective, right, reasonable, rational)
2
uncorrupted(adjective, right, reasonable, rational)
1
analytic(clear, reasonable, sensible, rational)
1
clear(adjective, reasonable, firm, sensible)
1
congruent(clear, reasonable, sensible, rational)
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APASmart Define. (2016). valid thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/valid/thesaurus/synonyms
ChicagoSmart Define. 2016. "valid thesaurus" https://smartdefine.org/valid/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, valid thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/valid/thesaurus/synonyms>.
MLASmart Define. "valid thesaurus" 31 March 2016. Web. 22 September 2026. <https://smartdefine.org/valid/thesaurus/synonyms>