| portentous(adjective, importance, valuable, main, notable) |
| considerable(adjective, importance, big, heavy, important) |
| influential(adjective, importance, important, powerful, valuable) |
| impressive(adjective, bad, strong, great, excellent) |
| outstanding(adjective, excellent, extraordinary, superior, importance) |
| solemn(adjective, importance, valuable, main, notable) |
| historic(adjective, importance, important, main, extremely significant) |
| unforgettable(adjective, importance) |
| noteworthy(adjective, great, solid, extraordinary, big) |
| grand(adjective, importance, valuable, main, notable) |
| meaningful(adjective, good, clear, strong, great) |
| eventful(adjective, bad, great, excellent, extraordinary) |
| responsible(adjective, importance, valuable, duty, reliable) |
| signal(adjective, great, solid, extraordinary, importance) |
| big-league(adjective, importance, valuable, main, notable) |
| decisive(adjective, great, extraordinary, big, important) |
| earnest(adjective, importance, important, valuable, main) |
| key(adjective, importance, valuable, main, notable) |
| bigwig(adjective, importance, valuable, main, notable) |
| chief(adjective, bad, great, excellent, superior) |