28 entries under adjective topic. ×

9
sound(good, correct, reasonable, reason)
8
valid(good, sound, right, reasonable)
7
well-founded(good, sound, reason, proper)
6
just(good, sound, correct, right)
6
reasonable(sound, correct, reason, proper)
5
cogent(good, sound, correct, reasonable)
5
rational(sound, reasonable, reason, forceful)
5
reasoned
4
sane(reason, sane)
4
sensible(reason, sane)
4
solid(good, sound, right, reasonable)
3
judicious(reason, knowledgeable, cultured, sane)
3
unquestionable
2
commonsensical(reason, sane)
2
levelheaded(reason, sane)
2
sapient(sound, reason, knowledgeable, cultured)
2
versed(knowledgeable, cultured, educated, erudite)
1
balanced(reason, sane)
1
commonsensible(reason, sane)
1
corroborated
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APASmart Define. (2016). well-grounded thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/well-grounded/thesaurus/synonyms
ChicagoSmart Define. 2016. "well-grounded thesaurus" https://smartdefine.org/well-grounded/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, well-grounded thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/well-grounded/thesaurus/synonyms>.
MLASmart Define. "well-grounded thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/well-grounded/thesaurus/synonyms>