| embryonic(adjective, cause, beginning, original, promising) |
| original(adjective, cause, beginning, opening, primary) |
| seminal(adjective, cause) |
| incipient(adjective, beginning, fresh, original, first) |
| initial(adjective, beginning, opening, fresh, original) |
| originative |
| aboriginal(adjective, cause, beginning) |
| budding(adjective, beginning, promising, blooming, increasing) |
| primordial(adjective, cause, beginning) |
| creative(adjective, rational, fantastic, original, resourceful) |
| primary(adjective, cause, opening, original, first) |
| primeval(adjective, beginning) |
| beginning(noun, adjective, beginning, opening, original) |
| fetal(adjective, beginning) |
| formative(adjective, beginning, causative) |
| primal(adjective, beginning) |
| primitive |
| causal(adjective, cause, causative) |
| early(adjective, beginning, opening, original, first) |
| first(adjective, beginning, opening, original, primary) |