| makeup(noun, understanding, philosophy, character, position) |
| mental age(noun, expression, understanding, philosophy, character) |
| mentality(noun, state, understanding, attitude, skill) |
| mind(noun, understanding, philosophy, character, position) |
| outlook(noun, understanding, philosophy, character, position) |
| penetration(noun, understanding, understand, sense, judgment) |
| perception(noun, understanding, mind, understand, sense) |
| personality(noun, understanding, philosophy, character, position) |
| perspicacity(noun, understanding, mind, understand, sense) |
| precocity(noun, understanding, mind, skill, understand) |
| psychology(noun, understanding, philosophy, character, position) |
| quickness(noun, understanding, skill, understand, sense) |
| quotient(noun, understanding, skill, understand, sense) |
| rationality(noun, understanding, philosophy, character, position) |
| reason(noun, understanding, mind, skill, understand) |
| reasoning(noun, understanding, philosophy, character, position) |
| right stuff(noun, expression, understanding, mind, understand) |
| sagacity(noun, understanding, understand, sense, judgment) |
| savvy(noun, understanding, mind, skill, understand) |
| sense(noun, understanding, philosophy, character, position) |