| important(adjective, great, tough, severe, extraordinary) |
| critical(adjective, great, severe, extraordinary, big) |
| vital(adjective, great, severe, big, heavy) |
| essential(adjective, severe, big, important, significant) |
| pivotal(adjective, important, significant, serious, critical) |
| urgent(adjective, tough, severe, big, heavy) |
| momentous(adjective, great, tough, severe, extraordinary) |
| serious(adjective, great, severe, extraordinary, big) |
| necessary(adjective, big, important, significant, original) |
| imperative(adjective, big, important, determined, significant) |
| significant(adjective, great, tough, severe, extraordinary) |
| fundamental(adjective, important, significant, original, capital) |
| decisive(adjective, great, severe, extraordinary, big) |
| grave(adjective, great, tough, severe, big) |
| key(adjective, important, significant, original, essential) |
| major(adjective, great, tough, severe, heavy) |
| pressing(adjective, tough, severe, big, heavy) |
| basic(adjective, important, significant, original, essential) |
| central(adjective, important, significant, original, critical) |
| main(adjective, important, significant, original, capital) |