| percipient(adjective, sound, sensible, rational, intelligent) |
| perspicuous(clear, sound, reasonable, sensible, rational) |
| pertinent(clear, sound, reasonable, sensible, rational) |
| practical(adjective, sound, sensible, rational, intelligent) |
| productive(adjective, sensible, useful, valuable) |
| profitable(adjective, sensible, useful, valuable) |
| prudent(moderate, honest, proper, reasoning, intellectual) |
| ratiocinative(adjective, clear, sound, sensible, fair) |
| realistic(adjective, sound, sensible, rational, practical) |
| reasoned(adjective, sound, sensible, rational, intelligent) |
| reasoning(adjective, sound, sensible, rational, intelligent) |
| reflective(adjective, sound, honest, sensible, fair) |
| relevant(clear, sound, reasonable, sensible, rational) |
| remunerative(adjective, sensible, useful, valuable) |
| rewarding(adjective, sensible, useful, valuable) |
| right and proper(expression, idiom) |
| sanctionable |
| sanctioned(proper, valid, permitted, lawful, permissible) |
| satisfactory |
| sober(adjective, sound, sensible, rational, intelligent) |