| go-ahead(adjective, keen, energetic, lively, active) |
| good |
| great(adjective, strong, severe, sharp, firm) |
| hale(adjective, strong, sound, tough, solid) |
| hard-hitting(adjective, strong) |
| hard as nails(expression, adjective, idiom, strong, sound) |
| hardy(adjective, strong, great, sound, tough) |
| high-pressure(adjective, strong, difficult, intense, violent) |
| husky(strong, tough, determined, vigorous, healthy) |
| impassioned(adjective, strong, difficult, intense, passionate) |
| impellent(energetic, powerful, propulsive) |
| imperative |
| intensive(strong, powerful, penetrating) |
| irrefutable(clear, certain, sure) |
| irresistible |
| marked(adjective, strong, intense, energetic, important) |
| masculinity(vigor, virility, handsomeness, manliness) |
| masterful(adjective, strong, tough, smart, energetic) |
| meaty |
| muscular(adjective, strong, great, sound, tough) |