| coal-and-ice(important, essential, critical, basic) |
| head(adjective, beginning, opening, original, prime) |
| highest(adjective, original, serious, essential, basic) |
| name(important, essential, critical, basic) |
| name-of-the-game(important, essential, critical, basic) |
| outstanding(adjective, important, significant, essential, basic) |
| predominant(adjective, important, significant, usual, essential) |
| preeminent(adjective, opening, original, serious, essential) |
| premier(adjective, head, beginning, opening, original) |
| supreme(adjective, opening, original, essential, prime) |
| underlined(important, essential, critical, basic) |
| controlling(adjective, essential, prime, core) |
| greatest(adjective, opening, original, serious, essential) |
| incomparable(adjective, essential, prime, main) |
| maximum(adjective, essential, prime, main) |
| nitty gritty(noun, expression, basic, absolute) |
| nubber(basic, absolute) |
| overruling(adjective, serious, essential, basic, prime) |
| prevailing(usual, main, chief, principal) |
| prominent(adjective, essential, prime, main) |