| amazing |
| critical(important, significant, serious, historic) |
| heavy number(expression, important, significant, historic) |
| momentous(adjective, important, significant, historic) |
| big(important, significant, historic) |
| chips are down(expression, idiom, important, significant, historic) |
| consequential(important, significant, serious, critical, historic) |
| crucial(important, significant, serious, critical, historic) |
| earthshaking(adjective, important, serious, critical) |
| epochal(important, significant, historic) |
| eventful(important, significant, historic) |
| fateful(important, significant, historic) |
| historic(important, significant) |
| important serious(expression, important, significant, historic) |
| life-and-death(adjective, important, earthshaking) |
| material(important, significant, historic) |
| meaningful(important, significant, serious, critical, historic) |
| memorable(important, significant, historic) |
| of moment(expression, important, significant, historic) |
| outstanding(important, significant, historic) |