86 entries under sound topic. ×

5
substantial(reasonable, rational)
5
well-grounded(adjective, good, correct, reasonable)
4
authoritative(adjective, strong, reasonable, energetic)
4
credible(reasonable, solid, rational, realistic)
4
efficacious(adjective, strong, power, reasonable)
4
intelligent(adjective, clear, reasonable, sensible)
4
wise(adjective, clear, reasonable, sensible)
3
pertinent(adjective, clear, reasonable, sensible)
3
relevant(adjective, clear, reasonable, sensible)
2
accurate(adjective, correct, reasonable, proper)
2
analytic(adjective, clear, reasonable, sensible)
2
binding(reasonable, rational)
2
coherent(adjective, clear, reasonable, sensible)
2
consistent(clear, reasonable, sensible, natural)
2
discerning(clear, reasonable, sensible, rational)
2
efficient(power, reasonable, violent, rational)
2
fair(good, clear, reasonable, honest)
2
genuine(adjective, good, right, reasonable)
2
in force(expression, reasonable, rational)
2
irrefutable(reasonable, rational, definite, precise)
10 years ago|13k views|share |citing 
APASmart Define. (2016). cogent thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/cogent/thesaurus/synonyms
ChicagoSmart Define. 2016. "cogent thesaurus" https://smartdefine.org/cogent/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, cogent thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/cogent/thesaurus/synonyms>.
MLASmart Define. "cogent thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/cogent/thesaurus/synonyms>