| powerful(adjective, clear, strong, power, great) |
| potent(adjective, clear, strong, great, sound) |
| mighty(adjective, strong, great, sound, strength) |
| vigorous(adjective, strong, great, sound, strength) |
| forceful(adjective, clear, strong, great, sound) |
| strong(adjective, clear, strong, great, sound) |
| stout(adjective, strong, sound, strength, heavy) |
| energetic(adjective, strong, sound, tough, energetic) |
| forcible(adjective, clear, strong, sound, strength) |
| robust(adjective, strong, sound, strength, heavy) |
| competent(adjective, power, energetic, powerful, vigorous) |
| hard(adjective, strength) |
| sturdy(adjective, strong, sound, strength, energetic) |
| cogent(adjective, clear, strong, power, energetic) |
| efficacious(adjective, strong, power, energetic, powerful) |
| hearty(adjective, strong, informal, vigorous) |
| stalwart(adjective, strong, sound, heavy, powerful) |
| able(adjective, strong, power, sound, energetic) |
| authoritative(adjective, strong, powerful, effective, prevailing) |
| effective(adjective, clear, strong, power, energetic) |