| effect(verb, make, open, start, produce) |
| effectuate(verb, make, start, effect) |
| encourage(verb, get, drive, cause, touch) |
| explode(verb, discharge, hit, kill, fire) |
| fomentation(noun, motive) |
| hasten(verb, cause, speed, motivate, hurry) |
| incentive(noun, charge, cause, start, boost) |
| incitation(noun, charge, cause, start, boost) |
| inflame(verb, get, cause, disturb, touch) |
| introduce(verb, make, open, start, produce) |
| invigorate(verb, get, touch, encourage, raise) |
| knocker(noun, handle, instrument) |
| pioneer(verb, open, start, admit, initiate) |
| pique(verb, drive, cause, disturb, encourage) |
| prod(verb, drive, cause, encourage, push) |
| provocation(noun, charge, cause, start, boost) |
| push(noun, verb, charge, drive, cause) |
| quicken(verb, get, drive, cause, disturb) |
| release |
| stimulus(noun, charge, cause, start, boost) |