castrate

arouse, rouse, stir

charge, electrify, galvanize

excite, ferment, fire, foment, incite, inflame (also enflame), instigate, kindle, provoke, spark, trigger, whip (up)

abet, boost, buoy, cheer, embolden, fortify, hearten, inspire, lift

reactivate, reanimate, reawake, reawaken, recharge, reenergize, refresh, regenerate, rejuvenate, rekindle, renew, resurrect, resuscitate, revitalize, revive