1. (v. i.) To use strength in action; to act or operate with force or vigor; to act in producing an effect.

2. (v. t.) To give strength or force to; to make active; to alacrify; as, to energize the will.

activate actuate amplify animate arm arouse breathe life into bring into being bring into existence bring to life build up call into being call into existence charge compel conceive dynamize egg on electrify empower enable endow with life enliven excite exhilarate fire force fortify foster galvanize generate give birth give life to hearten impel inflame inspire inspirit invigorate jazz up kindle liven loop in motivate move move to action pep up perk up plug in promote propel quicken reinforce rouse set in motion shock short short-circuit snap up spark step down step up stiffen stimulate stir sustain switch off switch on turn off turn on urge vitalize vivify waken warm zip up