THESAURUS
intensify
accelerate, accent, accentuate, accrue, accumulate, advance, agent provocateur, aggrandize, aggravate, amplify, annoy, appreciate, augment, balloon, beef up, bloat, blow up, boom, breed, broaden, build up, complicate, concentrate, condense, consolidate, crescendo, deepen, deteriorate, develop, double, embitter, emphasize, enhance, enlarge, escalate, exacerbate, exaggerate, exalt, exasperate, focus, gain, gain strength, get ahead, go up, grow, heat up, heighten, hop up, hot up, increase, irritate, jazz up, key up, magnify, make acute, make complex, make worse, mount, multiply, proliferate, provoke, quicken, ramify, redouble, reinforce, rise, rouse, run up, sharpen, shoot up, snowball, soup up, sour, spread, step up, strengthen, stress, swell, triple, wax, whet, widen, worsen
ROGET THESAURUS
intensify
Increase
VB
increase, augment, add to, enlarge, dilate, grow, wax, get ahead, gain strength, advance, run up, shoot up, rise, ascend, sprout, aggrandize, raise, exalt, deepen, heighten, strengthen,
intensify, enhance, magnify, redouble, aggravate, exaggerate, exasperate, exacerbate, add fuel to the flame, oleum addere camino, superadd, spread.
Physical Energy
VB
give energy, energize, stimulate, kindle, excite, exert, sharpen,
intensify, inflame, wind up, strike home, into home, hard home, make an impression.