192 entries under sound topic. ×

8
justifiable(adjective, clear, reasonable, honest)
8
levelheaded(adjective, calm, good, quiet, hard)
8
sapient(adjective, reason, sensible, proper)
8
stable(adjective, reasonable, sensible, normal)
7
believable(adjective, reasonable, honest, sensible)
7
cogent(adjective, clear, reasonable, sensible)
7
coherent(adjective, clear, reasonable, sensible)
7
right(adjective, reasonable, honest, sensible)
7
valid(reasonable, sensible, proper, logical)
6
astute(adjective, understanding, hard, tough)
6
just(adjective, adverb, good, reasonable)
6
moderate(adjective, reasonable, sensible, fair)
6
pragmatic(adjective, hard, tough, reasonable)
6
reflective(adjective, reasonable, honest, sensible)
6
tenable(adjective, reasonable, honest, sensible)
6
well-founded(adjective, reasonable, reason, logical)
5
analytic(adjective, clear, reasonable, reason)
5
commonsense(adjective, hard, reasonable, sensible)
5
deliberate(adjective, reasonable, sensible, restrained)
5
fair(adjective, good, clear, reasonable)
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APASmart Define. (2016). rational thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/rational/thesaurus/synonyms
ChicagoSmart Define. 2016. "rational thesaurus" https://smartdefine.org/rational/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, rational thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/rational/thesaurus/synonyms>.
MLASmart Define. "rational thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/rational/thesaurus/synonyms>