| meditating(noun, verb, adjective, thinking) |
| reasoning(noun, verb, adjective, study, keen) |
| reflecting(noun, verb, adjective, keen, thoughtful) |
| study(noun, exercise, thought, consideration, debate) |
| cerebration(noun, thought, consideration, debate, thinking) |
| daydreaming(noun, verb, thought, consideration, thinking) |
| deliberating(noun, verb, adjective, thinking) |
| lucubration(noun, thought) |
| thoughtful(adjective, reasonable, keen, deep, sober) |
| broody |
| contemplating(noun, verb, adjective, thinking) |
| envisioning(noun, verb, thought, thinking) |
| attention(noun, study, class, exercise, thought) |
| considering(noun, verb, thinking) |
| speculating(verb, thinking) |
| imagining(verb, thinking) |
| intellection(noun, thought) |
| ruminating(noun, verb, adjective, thoughtful, consideration) |
| absorption(noun, thought, consideration, thinking, detachment) |
| analysis(noun, study, class, exercise, thought) |