192 entries under sound topic. ×

5
impartial(adjective, reasonable, honest, sensible)
5
legitimate(adjective, clear, reasonable, honest)
5
matter-of-fact(adjective, hard, reasonable, sensible)
5
percipient(adjective, understanding, keen, sharp)
5
probable(adjective, reasonable, sensible, solid)
5
shrewd(adjective, hard, tough, reasonable)
5
solid(reasonable, useful, realistic, forceful)
5
steady(adjective, calm, quiet, reasonable)
5
well-grounded(adjective, reasonable, reason, forceful)
4
consistent(adjective, clear, reasonable, sensible)
4
hardheaded(adjective, hard, reasonable, sharp)
4
objective(adjective, hard, reasonable, honest)
4
real(hard, reasonable, sensible, practical)
4
reasoned(adjective, adverb, reasonable, sensible)
4
synthetic(adjective, reasonable, sensible, realistic)
4
unromantic(adjective, hard, reasonable, sensible)
4
unsentimental(adjective, hard, tough, reasonable)
4
well-advised(adjective, good, reasonable, sensible)
3
conscious(adjective, understanding, reasonable, keen)
3
good(adjective, reasonable, keen, sharp)
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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>