accelerate, agent provocateur, aggravate, amplify, annoy, augment, beef up, blow up, build up, chafe, complicate, concentrate, condense, consolidate, cook, deepen, deteriorate, double, electric-heat, embitter, enhance, enlarge, exacerbate, exaggerate, exasperate, fire, fire up, foment, gas-heat, heat, heat up, heighten, hop up, hot-air-heat, hot-water-heat, hot, increase, intensify, irritate, jazz up, key up, magnify, make acute, make complex, make worse, mull, overheat, preheat, provoke, ramify, recook, redouble, reheat, reinforce, sharpen, soup up, sour, steam, step up, stoke up, strengthen, superheat, tepefy, triple, warm, warm over, warm up, whet, worsen