| well-spring |
| occasion(noun, verb, cause, start, reason) |
| antecedent(noun, cause, reason, base, matter) |
| conception(noun, start, beginning, birth, dawn) |
| genealogy(noun, kin, precede) |
| incipience(noun, start, beginning, commencement) |
| infancy(noun, start, top, beginning, opening) |
| introduction(noun, cause, start, rise, top) |
| nascency(noun, start, beginning, birth) |
| starting point(noun, expression, idiom, cause, top) |
| wellspring(noun, person, cause, start, base) |
| alpha(noun, cause, start, top, beginning) |
| ancestor(noun, person, cause, base, beginning) |
| begetter(person, cause, foundation, basis, pop) |
| birthplace(noun, cause, authority, beginning, stock) |
| blood line(noun, expression, idiom) |
| bottom(noun, cause, base, source, core) |
| breed(noun, company, place, set, kind) |
| determinant(noun, person, cause, reason, base) |
| etymology(noun, history) |