propel

impel, move

bear (down), compress, depress, jam, pressure, squash, squeeze, weigh (upon)

bulldoze, compel, force, lean (on or against), muscle, ram

activate, motivate, provoke

abet, ferment, foment, incite, raise, stir (up), whip (up)

set off, trigger, trip

arouse, excite, fire (up), galvanize, inflame (also enflame), inspire, instigate, rouse, stimulate