Synonyms for Energize:

n.

dazzle, interest, attract, intrigue, fire someone with enthusiasm. control, flash, crank, actuate, flick, help, eject, coax, engage, vitalize. energize (noun)
stimulate, energise, perk up, excite, arouse, brace.

v.

activate; give more life (verb)
fortify, enliven, invigorate, reinforce, vitalize, electrify, excite, strengthen, motivate, trigger, animate, empower, stimulate.
body (verb)
brace, energise, arouse, perk up, stimulate.
empower (verb)
command, enforce, authorize.
energize (verb)
drive, fire, recharge, revive, spark, charge, power, empower, invigorate, activate, force, rouse.
excite (verb)
disquiet, stimulate, inflame, exhilarate, arouse, Impassion, disturb, electrify.
invigorate (verb)
strengthen, enliven, excite, enthuse, agitate, animate.
motivate (verb)
jostle, poke, prod, magnetize, jog, trigger, thrust, pitch, launch, entice, hurtle, ram, hurl, move, inspire, motivate, induce, push, punch, sling, provoke, jolt, foment, jerk, strike, goad, heave, fling, throw, hasten, shove, encourage, urge, shoot, impel, ferment, instigate, catapult, nudge, lob, knock, bump, prompt, propel.
strengthen (verb)
toughen, prop, support, vivify, reinforce, temper, fortify, brace, beef up, buttress, harden.

Other synonyms:

coax, actuate, eject, flick. crank, engage, control. flash. animate
vitalize.
excite
foment.
revitalize
recharge.
Other relevant words:
engage, coax, intrigue, actuate, flash, interest, dazzle, energise, attract, flick, help, vitalize, perk up, eject, crank, control.