45 entries under reasonable topic. ×

11
compelling(adjective, sensible, important, serious)
4
logical(adjective, clear, sound, rational)
2
clear(sound, sensible, certain, rational)
2
relevant(adjective, clear, sound, sensible)
1
analytic(clear, sound, sensible, rational)
1
analytical(clear, sound, sensible, rational)
1
cogent(clear, sound, sensible, rational)
1
coherent(clear, sound, sensible, rational)
1
commonsensical(clear, sound, sensible, rational)
1
congruent(clear, sound, sensible, rational)
1
consequent(clear, sound, sensible, rational)
1
consistent(clear, sound, sensible, rational)
1
convincing(clear, sound, sensible, rational)
1
deducible(clear, sound, sensible, rational)
1
discerning(clear, sound, sensible, rational)
1
discriminating(clear, sound, sensible, rational)
1
extensional(clear, sound, sensible, rational)
1
fair(clear, sound, sensible, rational)
1
germane(clear, sound, sensible, rational)
1
holding together(expression, clear, sound, sensible)
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APASmart Define. (2015). necessary thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/necessary/thesaurus/synonyms
ChicagoSmart Define. 2015. "necessary thesaurus" https://smartdefine.org/necessary/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, necessary thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/necessary/thesaurus/synonyms>.
MLASmart Define. "necessary thesaurus" 2 November 2015. Web. 22 September 2026. <https://smartdefine.org/necessary/thesaurus/synonyms>