6
brain(noun, intelligence, intellect)
5
mentality(noun, intelligence, intellect)
4
brainpower(noun, intelligence, intellect)
3
caliber(noun, aptitude, IQ)
3
learning ability
3
wit
2
calibre
2
capacity(intelligence, intellect)
2
intellect(noun, intelligence)
2
intelligence(noun, intellect)
2
intelligence quotient(noun, measure)
2
mind(noun, intelligence, intellect)
2
understanding(noun, intelligence, intellect)
1
apprehension
1
calibrate
1
comprehension
1
conception
1
esprit
1
gray matter
1
grey matter
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APASmart Define. (2015). mental capacity thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/mental_capacity/thesaurus/synonyms
ChicagoSmart Define. 2015. "mental capacity thesaurus" https://smartdefine.org/mental_capacity/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, mental capacity thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/mental_capacity/thesaurus/synonyms>.
MLASmart Define. "mental capacity thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/mental_capacity/thesaurus/synonyms>