| theoretical(adjective, moral, risky, metaphysical, unsubstantiated) |
| understandable(adjective, sound, reasonable, running, indirect) |
| well-advised(adjective, good, sound, reasonable, sensible) |
| well-presented |
| well-thought-out(adjective, sound, reasonable, sensible, rational) |
| wholesome |
| all there(expression, adjective, good, sound, reasonable) |
| applicable(adjective, relevant) |
| apposite(adjective, relevant) |
| apropos(adjective, relevant) |
| articulate(sound, rational, coherent) |
| authoritative(good, sound, right, reasonable, rational) |
| aware(adjective, reasonable, sensible, alert, rational) |
| believable(adjective, sound, reasonable, sensible, rational) |
| binding(sound, reasonable, rational) |
| brainy(adjective, reasonable, keen, sensible, deep) |
| cerebral(adjective, sound, reasonable, sensible, rational) |
| circumspect(adjective, sound, reasonable, sensible, reasoning) |
| clear-headed |
| collected(sound, reasonable, sensible, alert, perceptive) |