| principal(adjective, body, great, importance, material) |
| central(adjective, important, significant, original, essential) |
| chief(adjective, importance, big, important, significant) |
| major(adjective, great, heavy, important, significant) |
| paramount(adjective, importance, important, significant, original) |
| prime(adjective, body, importance, material, important) |
| decisive(adjective, severe, big, important, significant) |
| forceful(adjective, strong, tough, intense, energetic) |
| radical(adjective, great, importance, important, significant) |
| capital(adjective, top, importance, important, serious) |
| exigent(adjective, big, heavy, important, significant) |
| focal(adjective, chief, foremost) |
| underlying(adjective, important, significant, original, essential) |
| elementary(adjective, top, important, significant, original) |
| foremost(adjective, importance, big, important, significant) |
| heavy(adjective, informal, big, important, significant) |
| leading(adjective, top, importance, important, serious) |
| overruling(adjective, importance, serious, essential, basic) |
| primitive(adjective, body, material, important, significant) |
| special(important, chief, foremost) |