| impulse(noun, cause, influence, source, origin) |
| inducement(noun, cause, source, origin, derivation) |
| influence(noun, cause, source, origin, derivation) |
| inspiration(noun, cause, influence, source, spring) |
| motive(noun, cause, source, origin, derivation) |
| nucleus(noun, cause, influence, source, origin) |
| occasion(noun, cause, source, origin, derivation) |
| principle(noun, cause, source, origin, derivation) |
| progenitor(noun, cause, influence, source, origin) |
| radix(cause, source, origin) |
| roots(noun, cause, influence, source, origin) |
| seed(noun, cause, influence, source, root) |
| start(noun, cause, beginning, source, foundation) |
| starting point(expression, cause, source, foundation, basis) |
| afterlife |
| basis(noun, cause, source, foundation, root) |
| causality(noun, cause, source, origin, derivation) |
| causation(noun, cause, influence, source, origin) |
| cause(noun, influence, source, foundation, basis) |
| conception |