| initiatory(adjective, start, beginning, opening, original) |
| intact(adjective, simple, whole, united) |
| keystone(noun, law, support, regulation, action) |
| meat-and-potatoes(adjective, important, original, essential, critical) |
| mere |
| must(noun, condition, need, essential, certainty) |
| natal |
| part and parcel(noun, expression, adjective, idiom, characteristic) |
| particular(noun, drop, part, material, essential) |
| preparatory |
| pristine(adjective, rough, violent, head, beginning) |
| quintessential(adjective, important, significant, essential, basic) |
| required(adjective, important, significant, capital, essential) |
| requirement(noun, concern, demand, need, essential) |
| same(adjective, simple, whole, united) |
| seminal(adjective, generative) |
| simon-pure(adjective, pure) |
| soul(cause, source, origin) |
| spare(adjective, severe) |
| special(adjective, important, key, chief, foremost) |