Synonyms and related words :
accelerate, agent provocateur, aggravate, amplify, annoy, augment, beef up, blow up, broaden, build up, burrow, complicate, concentrate, condense, consolidate, countersink, depress, deteriorate, dig, dig out, dive, double, dredge, drill, embitter, enhance, enlarge, exacerbate, exaggerate, exasperate, excavate, expand, extend, heat up, heighten, hop up, hot up, increase, intensify, irritate, jazz up, key up, lower, magnify, make acute, make complex, make worse, mine, mount, outspread, outstretch, provoke, ramify, redouble, reinforce, rise, rouse, scoop out, sharpen, sink, soup up, sour, spread, spread out, step up, strengthen, triple, tunnel, whet, widen, worsen