| reflective(adjective, characteristic, quality, thinking, reflection) |
| regardful(adjective, characteristic, quality, thinking, anticipation) |
| resourceful(adjective, characteristic, quality, mind, intelligence) |
| respectful(adjective, characteristic, quality, thinking, anticipation) |
| ruminant(adjective, characteristic, quality, thinking, reflection) |
| ruminative(adjective, characteristic, quality, thinking, reflection) |
| sagacious(adjective, characteristic, quality, mind, intelligence) |
| sage(adjective, characteristic, quality, mind, intelligence) |
| sane(adjective, characteristic, quality, mind, intelligence) |
| savvy(adjective, characteristic, quality, mind, intelligence) |
| scholarly(adjective, characteristic, quality, mind, intelligence) |
| schooled(adjective, characteristic, quality, mind, intelligence) |
| sedate(adjective, characteristic, quality, thinking, reflection) |
| self-reflective(adjective, characteristic, quality, thinking, reflection) |
| serious(adjective, characteristic, quality, thinking, reflection) |
| serious-minded(adjective, characteristic, quality, thinking, reflection) |
| severe(adjective, characteristic, quality, thinking, reflection) |
| sharp-witted(adjective, characteristic, quality, mind, intelligence) |
| shrewd(adjective, characteristic, quality, mind, intelligence) |
| skilled(adjective, characteristic, quality, mind, intelligence) |