| capacity(noun, nature, feeling, understanding, character) |
| temperament(noun, nature, character, attitude, temper) |
| head(noun, power, spirit, ability, mind) |
| learning ability(noun, expression, idiom) |
| mental age(noun, expression, idiom, state, attitude) |
| psyche(noun, understanding, power, philosophy, character) |
| acuity(noun, understanding, skill, understand, sense) |
| acumen(noun, understanding, ability, mind, understand) |
| bent(noun, nature, character, mind, sense) |
| encephalon(noun, mind, intelligence) |
| ethos(noun, philosophy, character, psychology, mind) |
| grey matter |
| inclination(noun, nature, character, disposition, personality) |
| intellectuality(noun, understanding, power, spirit, ability) |
| intelligence quotient(noun, expression, state, attitude, approach) |
| makeup(noun, nature, state, character, attitude) |
| maturity(noun, ability, experience, readiness, sweetness) |
| mindset |
| perception(noun, feeling, understanding, mind, reason) |
| way of thinking(noun, expression, idiom, state, psychology) |