| primary(adjective, position, top, lead, fine) |
| principal(adjective, good, bad, great, position) |
| chief(adjective, quality, bad, great, position) |
| prime(adjective, good, quality, lead, superior) |
| paramount(adjective, good, quality, position, top) |
| leading(adjective, good, quality, great, position) |
| foremost(adjective, great, position, top, lead) |
| essential(adjective, importance, important, significant, basic) |
| cardinal(noun, adjective, quality, position, top) |
| important(adjective, good, bad, great, excellent) |
| major(adjective, bad, great, top, excellent) |
| first(adjective, quality, top, superior, importance) |
| capital(noun, adjective, quality, bad, great) |
| dominant(adjective, quality, bad, great, top) |
| central(adjective, lead, important, head, significant) |
| key(adjective, lead, important, head, significant) |
| basic(adjective, top, important, significant, essential) |
| conduit(noun, line, thing, course, means) |
| fundamental(adjective, important, significant, usual, essential) |
| predominant(adjective, bad, great, excellent, important) |