| studious(adjective, reasonable, keen, thought, deep) |
| philosophical(adjective, thought, rational, intelligent, thoughtful) |
| ruminant(feature, characteristic, trait, thought, meditation) |
| attentive(adjective, reasonable, thought, thoughtful, serious) |
| serious(adjective, reasonable, thoughtful, sober, thinking) |
| wise(adjective, sound, reasonable, keen, sharp) |
| absorbed(adjective, reasonable, keen, deep, rational) |
| excogitative(adjective, thoughtful, thoughts) |
| intent(adjective, set, severe, keen, honest) |
| melancholy(adjective, reasonable, keen, deep, rational) |
| plaintive(adjective, melancholy, thoughtful, dejected, pensive) |
| rapt(adjective, reasonable, keen, thought, deep) |
| reflecting(adjective, reasonable, keen, thought, deep) |
| self-examining(adjective, characteristic, quality, experience, analysis) |
| sober(adjective, set, reasonable, severe, keen) |
| anguished(adjective, dejected) |
| challenging(adjective, questioning) |
| contemplative about oneself(adjective, characteristic, quality, experience, analysis) |
| dejected(adjective, dejected) |
| despairing(adjective, dejected) |