| effective(adjective, strong, power, moving, tough) |
| effectual(adjective, strong, power, thrive, valid) |
| powerful(adjective, good, strong, power, sound) |
| productive(adjective, power, tough, energetic, useful) |
| efficient(adjective, good, power, sound, right) |
| operative(adjective, strong, power, valid, legal) |
| strong(adjective, power, valid, legal, efficient) |
| potent(adjective, good, strong, tough, powerful) |
| influential(adjective, strong, energetic, important, powerful) |
| persuasive(adjective, strong, energetic, powerful, capable) |
| useful(adjective, strong, tough, powerful, effective) |
| forceful(adjective, strong, power, valid, legal) |
| telling(adjective, strong, sound, energetic, powerful) |
| successful(adjective, happy, useful, helpful, effective) |
| active(adjective, movement, moving, tough, energetic) |
| capable(adjective, strong, power, tough, energetic) |
| competent(adjective, strong, power, tough, energetic) |
| adequate(adjective, power, tough, energetic, effective) |
| cogent(adjective, strong, power, sound, reasonable) |
| valid(adjective, strong, power, right, genuine) |