incite

abet actuate goose send light a fire under sting bring about cheer draw drive encourage egg on engender evoke foment excite goad grill ignite impel induce inflame instigate lash invoke motive motivate move obligate oblige push promote prompt provoke rouse set off spark off spur spur on stimulate stir stir up stoke urge tempt whet whip up

curb daunt demoralize demotivate deter discourage dishearten dissuade halt prevent stop