| high-up(adjective, importance, valuable, main, notable) |
| historic(adjective, importance, important, main, extremely significant) |
| key-note(adjective, importance, valuable, main, notable) |
| life-and-death(adjective, heavy, important, serious, critical) |
| life-or-death(adjective, important, essential, critical, fundamental) |
| potent(adjective, strong, tough, energetic, powerful) |
| powerful(adjective, strong, sound, tough, energetic) |
| purposeful(adjective, importance, valuable, main, notable) |
| relevant(adjective, importance, main, extremely significant) |
| remarkable(adjective, importance, valuable, main, notable) |
| responsible(adjective, importance, valuable, main, notable) |
| significative(adjective, importance, valuable, main, notable) |
| solemn(adjective, importance, valuable, main, notable) |
| strong(adjective, strong, tough, energetic, powerful) |
| sturdy(adjective, strong, complete, tough, solid) |
| brawny(adjective, strong, tough, fit, healthy) |
| compelling(adjective, energetic, important, lively, active) |
| compulsory(adjective, set, important, significant, essential) |
| forceful(adjective, strong, tough, intense, energetic) |
| needful(adjective, set, important, significant, original) |