| idea(noun, philosophy, knowledge, reason, attitude) |
| imagination(noun, feeling, understanding, power, spirit) |
| meditating(verb, thinking) |
| motivation(noun, basis, thinking, justification, grounds) |
| ratiocinative(adjective, sound, reasonable, sensible, rational) |
| reflecting(verb, adjective, reasonable, keen, deep) |
| speculating(verb, thinking) |
| speculation(noun, understanding, mind, sense, intelligence) |
| absorption(noun, thought) |
| analytical(adjective, sound, reasonable, keen, sensible) |
| appraisal(noun, thought) |
| brain-power(noun, intellect) |
| brains(noun, feeling, understanding, power, philosophy) |
| brainy(adjective, reasonable, keen, heavy, rational) |
| cerebrating(verb, thinking) |
| cognition(noun, understanding, philosophy, idea, attention) |
| concentrating(verb, thinking) |
| conception(noun, power, knowledge, spirit, mind) |
| conceptualizing |
| egghead(adjective, intellectual) |