| potent(adjective, strong, tough, energetic, powerful) |
| priceless(adjective, excellent, sensible, valuable, helpful) |
| producing |
| promising(adjective, good, timely, advantageous, opportune) |
| prudent(practical, convenient) |
| rational(adjective, reasonable, sensible, sober, real) |
| ready-made |
| realistic(adjective, reasonable, practical, workable, applied) |
| regal |
| relevant(adjective, good, correct, right, reasonable) |
| reliable |
| restorative |
| right(good, correct, fit, appropriate, necessary) |
| sanative |
| sane(reasonable, realistic, applied, hands-on, real-world) |
| satisfactory(adjective, good, sound, secure, right) |
| seasonable(good, suitable, practical, advantageous, favorable) |
| sensible(adjective, reasonable, sober, valuable, real) |
| significant(adjective, friendly, sympathetic, valuable, effective) |
| skillful(tough, effective, adept, effectual, well-organized) |