| strong(adjective, strong, great, tough, bright) |
| ever-changing |
| tireless(adjective, strong, moving, energetic, lively) |
| vivid(adjective, bright, intense, energetic, powerful) |
| zippy(adjective, action, strong, tough, energetic) |
| sprightly(adjective, action, strong, keen, intense) |
| enterprising(adjective, action, strong, tough, keen) |
| intense(adjective, strong, great, tough, keen) |
| kinetic(adjective, action, strong, moving, energetic) |
| live(adjective, energetic, lively, active, vigorous) |
| productive(adjective, tough, energetic, active, vital) |
| progressive(adjective, active, vital, liberal, growing) |
| robust(adjective, strong, great, tough, energetic) |
| spry(adjective, action, strong, keen, intense) |
| aggressive(adjective, strong, keen, intense, energetic) |
| alive(adjective, active, full, animate, living) |
| driving(adjective, action, strong, tough, sharp) |
| eager(adjective, active) |
| electric(adjective, strong, energetic, violent, powerful) |
| high-powered(adjective, strong, moving, energetic, lively) |