| advisable(adjective, good, sound, reasonable, sensible) |
| all together(expression, adjective, exact, careful, regular) |
| anticipated(reasonable, ordinary, usual, normal, legitimate) |
| arguable(adjective, sound, reasonable, sensible, rational) |
| attentive(reasonable, thoughtful, sober, realistic, sane) |
| bright |
| brighten |
| by the book(expression, adjective, idiom, exact, regular) |
| by the numbers(expression, adjective, idiom, exact, regular) |
| calculating(adjective, reasonable, keen, deep, rational) |
| calm(adjective, sound, reasonable, sensible, rational) |
| canny(adjective, reasonable, rational, sober, wise) |
| causal |
| characteristic(reasonable, ordinary, usual, normal, legitimate) |
| clear-cut(adjective, clear, sound, sensible, plain) |
| clinical |
| closer |
| cogitative(adjective, reasonable, keen, deep, sober) |
| cognitive(adjective, sound, reasonable, sensible, rational) |
| coherence |