26
genius(noun, adjective, person, understanding, power)
20
cerebral(adjective, sound, reasonable, smart, sensible)
20
intelligent(adjective, sound, reasonable, ability, smart)
18
egghead(noun, adjective, person, bright, expert)
18
rational(adjective, good, sound, reasonable, smart)
16
highbrow(noun, adjective, person, smart, informal)
16
intellect(noun, person, understanding, power, spirit)
16
mental(adjective, mind, smart, rational, intelligent)
15
brainy(adjective, reasonable, ability, smart, bright)
14
sage(noun, adjective, person, bright, sage)
14
academic(noun, adjective, person, learned, sage)
14
learned(verb, adjective, smart, deep, rational)
14
thinker(noun, person, understanding, power, spirit)
13
brain(noun, person, understanding, power, spirit)
13
scholarly(adjective, smart, bright, deep, thoughtful)
12
clever(adjective, smart, bright, intelligent, brainy)
11
scholar(noun, person, authority, expert, sage)
10
psychological(adjective, mind, smart, rational, intelligent)
9
expert(noun, adjective, smart, bright, authority)
9
professor(noun, brain, sage, scholar)
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APASmart Define. (2016). intellectual thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/intellectual/thesaurus/synonyms
ChicagoSmart Define. 2016. "intellectual thesaurus" https://smartdefine.org/intellectual/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, intellectual thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/intellectual/thesaurus/synonyms>.
MLASmart Define. "intellectual thesaurus" 22 February 2016. Web. 20 September 2026. <https://smartdefine.org/intellectual/thesaurus/synonyms>