| testis |
| bollock |
| excite(verb, encourage, push, urge) |
| exhort(verb, encourage, push, urge, motive) |
| prompt(verb, encourage, push, urge) |
| seed(noun, cause, influence, connection, beginning) |
| spawn(noun, seed, cell, embryo) |
| spur(verb, encourage, push, urge, motive) |
| stimulate(verb, encourage, push, urge) |
| goad(verb, bother, encourage, push, annoy) |
| abet |
| arouse(verb, encourage, push, urge) |
| birth(cause, beginning, source, derivation) |
| cause(verb, influence, beginning, source, origin) |
| drive(verb, encourage, push, urge) |
| egg cell(noun, expression, idiom, seed, ovum) |
| induce |
| instigate(verb, encourage, push, urge) |
| nag(verb, bother, harass) |
| origin(noun, cause, beginning, source, basis) |