| main(adjective, original, essential, basic, absolute) |
| necessary(adjective, important, significant, original, essential) |
| primitive(adjective, important, significant, original, essential) |
| basal(adjective, important, significant, original, essential) |
| chief(essential, fundamental, principal, elementary) |
| complete(adjective, utter, basic, absolute, fundamental) |
| critical(adjective, original, essential, basic, fundamental) |
| meat and potatoes(expression, adjective, idiom, important, significant) |
| nitty-gritty(adjective, original, basic, absolute, fundamental) |
| nub(adjective, original, basic, absolute, fundamental) |
| prime(adjective, important, significant, original, essential) |
| substratal(adjective, important, significant, original, essential) |
| vital(adjective, important, significant, natural, original) |
| capital(essential, fundamental, principal, elementary) |
| cold(adjective, basic, absolute, fundamental) |
| ideal(adjective, basic, absolute, fundamental) |
| name of game(expression, idiom, absolute, constitutional) |
| name of the game(expression, adjective, idiom, basic, absolute) |
| perfect(adjective, basic, absolute, fundamental) |