2
well-educated(knowledgeable, cultured, educated, erudite, enlightened)
2
well-informed(knowledgeable, cultured, educated, erudite, enlightened)
2
well-read(knowledgeable, cultured, educated, erudite, enlightened)
1
abstruse(sound, knowledgeable, cultured, educated, erudite)
1
academic(sound, knowledgeable, cultured, educated, erudite)
1
accomplished(knowledgeable, cultured, educated, erudite, enlightened)
1
accurate(sound, correct, reasonable, proper, rational)
1
adamantine
1
admissible
1
audible(exact, specific, explicit)
1
authentic(good, sound, right, reasonable, rational)
1
balanced(adjective, reason, sane)
1
bold(exact, specific, explicit)
1
bona fide(expression, good, sound, right, reasonable)
1
bookish(sound, knowledgeable, cultured, educated, erudite)
1
brainy(knowledgeable, cultured, educated, erudite, enlightened)
1
bulky
1
calculable
1
categorical(exact, absolute, specific, explicit, indisputable)
1
certain
10 years ago|4.1k views|share |citing 
APASmart Define. (2016). well-grounded thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/well-grounded/thesaurus/synonyms
ChicagoSmart Define. 2016. "well-grounded thesaurus" https://smartdefine.org/well-grounded/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, well-grounded thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/well-grounded/thesaurus/synonyms>.
MLASmart Define. "well-grounded thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/well-grounded/thesaurus/synonyms>