81 entries under rational topic. ×

22
persuasive(adjective, clear, strong, great, direct)
21
convincing(adjective, good, clear, strong, great)
16
strong(adjective, clear, sound, reasonable, energetic)
15
telling(verb, adjective, good, clear, strong)
13
compelling(adjective, clear, strong, great, direct)
13
powerful(adjective, clear, strong, power, great)
13
valid(adjective, good, clear, power, direct)
11
potent(adjective, clear, strong, great, direct)
11
weighty(adjective, clear, strong, great, sound)
10
solid(adjective, good, clear, sound, reasonable)
9
logical(adjective, clear, sound, reasonable, sensible)
7
conclusive(adjective, sound, reasonable, solid)
6
sensible(adjective, good, clear, sound, reasonable)
5
good(adjective, sound, right, reasonable, honest)
5
plausible(adjective, clear, sound, reasonable, sensible)
5
substantial(sound, reasonable)
5
well-grounded(adjective, good, sound, correct, reasonable)
4
authoritative(adjective, strong, sound, reasonable, energetic)
4
credible(sound, reasonable, solid, realistic)
4
intelligent(adjective, clear, sound, reasonable, sensible)
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APASmart Define. (2016). cogent thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/cogent/thesaurus/synonyms
ChicagoSmart Define. 2016. "cogent thesaurus" https://smartdefine.org/cogent/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, cogent thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/cogent/thesaurus/synonyms>.
MLASmart Define. "cogent thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/cogent/thesaurus/synonyms>