2
open(adjective, good, direct, right, honest)
2
perceptive(clear, sound, reasonable, sensible, rational)
2
permissible(reasonable, proper, just, legal, legitimate)
2
physical(adjective, solid, material, real, positive)
2
politic(adjective, moderate, honest, fair, proper)
2
practical
2
productive(adjective, power)
2
provable(adjective, clear, true, sure, demonstrable)
2
proved(true, real, established, indisputable, approved)
2
proven(adjective, good, sound, right, reasonable)
2
ratiocinative(adjective, clear, sound, logical, systematic)
2
regal
2
relatable(adjective, apt)
2
responsible(open, honest, sensible, solid, reliable)
2
righteous(open, correct, honest, true, real)
2
sane
2
sapient(adjective, moderate, honest, fair, proper)
2
satisfying(adjective, good, clear, reasonable, sensible)
2
scholarly
2
secure(open, solid, proper, reliable, accepted)
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APASmart Define. (2016). valid thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/valid/thesaurus/synonyms
ChicagoSmart Define. 2016. "valid thesaurus" https://smartdefine.org/valid/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, valid thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/valid/thesaurus/synonyms>.
MLASmart Define. "valid thesaurus" 31 March 2016. Web. 20 September 2026. <https://smartdefine.org/valid/thesaurus/synonyms>