| thoughtful(adjective, characteristic, rational, intelligent, thinking) |
| pensive(adjective, characteristic, reasonable, rational, intelligent) |
| meditative(adjective, characteristic, reasonable, rational, intelligent) |
| cogitative(adjective, characteristic, reasonable, rational, intelligent) |
| reflective(adjective, characteristic, reasonable, rational, intelligent) |
| contemplative(adjective, characteristic, reasonable, thought, rational) |
| musing(adjective, characteristic, reasonable, thoughtful, sober) |
| wistful(adjective, characteristic, reasonable, rational, thoughtful) |
| pondering(adjective, characteristic, reasonable, rational, thoughtful) |
| brooding(adjective, thoughtful, thinking, absorbed, pensive) |
| broody(adjective, characteristic, thoughtfulness, rumination) |
| introspective(adjective, characteristic, reasonable, rational, intelligent) |
| preoccupied(adjective, characteristic, reasonable, rational, thoughtful) |
| serious(adjective, characteristic, reasonable, rational, thoughtful) |
| sober(adjective, characteristic, reasonable, rational, thoughtful) |
| speculative(adjective, characteristic, thoughtful, thinking, absorbed) |
| thinking(adjective, characteristic, reasonable, rational, intelligent) |
| excogitative(adjective, characteristic, thoughtful, thoughtfulness, thoughts) |
| attentive(adjective, characteristic, reasonable, thoughtful, serious) |
| deliberative(adjective, characteristic, reasonable, rational, intelligent) |