18 entries under rational topic. ×

13
scholarly(adjective, intelligent, serious, wise)
12
learned(verb, adjective, obscure, serious)
12
studious(adjective, wise, knowledgeable, attentive)
6
intellectual(adjective, sound, smart, wise)
5
highbrow(adjective, intelligent, thoughtful, serious)
3
brainy(adjective, intelligent, thoughtful, serious)
2
thoughtful(intelligent, serious, knowledgeable, reflective)
1
cerebral(adjective, intelligent, thoughtful, serious)
1
knowledgeable(adjective, intelligent, intellectual, cultured)
0
highbrowed(intelligent, thoughtful, knowledgeable)
0
intellective(intelligent, thoughtful, serious, wise)
0
inventive(intelligent, thoughtful, knowledgeable)
0
logical(intelligent, knowledgeable)
0
mental(intelligent, thoughtful, knowledgeable)
0
phrenic(intelligent, thoughtful, knowledgeable)
0
psychological(intelligent, thoughtful, knowledgeable)
0
subjective(intelligent, thoughtful, knowledgeable)
0
very smart(expression, intelligent, thoughtful, knowledgeable)
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APASmart Define. (2015). bookish thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/bookish/thesaurus/synonyms
ChicagoSmart Define. 2015. "bookish thesaurus" https://smartdefine.org/bookish/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, bookish thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/bookish/thesaurus/synonyms>.
MLASmart Define. "bookish thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/bookish/thesaurus/synonyms>