| introductory(adjective, beginning, opening, original, first) |
| nascent(adjective, beginning, opening, original, first) |
| overriding |
| pioneer(adjective, beginning, opening, original, prime) |
| precursory(adjective, beginning) |
| premiere(adjective, lead, head, master, boss) |
| preparatory(adjective, beginning) |
| prevailing(adjective, outstanding, prominent, prime, key) |
| renowned(adjective, great, important, famous, outstanding) |
| vital(adjective, importance, big, important, significant) |
| well-known(adjective, great, solid, extraordinary, important) |
| all-absorbing |
| antecedent(beginning, opening, original, first, primary) |
| anterior(lead, beginning, original, first, visible) |
| avant-garde(adjective, sophisticated, leading-edge, higher, pioneering) |
| basic(adjective, top, important, significant, original) |
| beforehand(adjective, adverb, advanced, first, forward) |
| commencing(adjective, beginning, opening, original, first) |
| conspicuous(adjective, great, big, famous, outstanding) |
| core(adjective, lead, head, master, boss) |