| intellectual(adjective, sound, reasonable, smart, sensible) |
| mental(adjective, mind, smart, rational, intelligent) |
| cognitive(adjective, sound, reasonable, sensible, rational) |
| intelligent(adjective, sound, reasonable, smart, sensible) |
| psychological(adjective, mind, rational, intelligent, intellect) |
| psychic(adjective, rational, intellectual, supernatural, mental) |
| psychical(adjective, rational, intellect, emotional, reasoning) |
| rational(adjective, sound, reasonable, sensible, intelligent) |
| brainy(adjective, reasonable, rational, intelligent, thoughtful) |
| highbrow(adjective, informal, rational, intelligent, thoughtful) |
| spiritual(adjective, rational, intellect, emotional, intellectual) |
| noetic |
| subjective(adjective, reasonable, rational, intelligent, thoughtful) |
| reasoning(adjective, sound, reasonable, sensible, rational) |
| ruminative(adjective, reasonable, rational, thoughtful, sober) |
| thinking(adjective, sound, reasonable, keen, sensible) |
| thoughtful(adjective, sound, reasonable, sensible, rational) |
| erudite(adjective, rational, serious, wise, intellectual) |
| highbrowed(rational, intelligent, thoughtful, knowledgeable) |
| cacuminal |