quickly, hurriedly, in a hurry, fast, swiftly, rapidly, speedily, briskly, expeditiously, without delay, post-haste, at high speed, at full speed, with all speed, at full tilt, at the speed of light, as fast as possible, with all possible haste, like a whirlwind, like an arrow from a bow, at breakneck speed, as fast as one's legs can carry one, at a run, at a gallop, hotfoot, on the double;

cursorily, perfunctorily, briefly, fleetingly, sketchily, superficially

informal double quick, in double quick time, p.d.q. (pretty damn quick), nippily, like (greased) lightning, hell for leather, like mad, like crazy, like blazes, like the wind, like a bomb, like nobody's business, like a scalded cat, like the deuce, a mile a minute, like a bat out of hell, at warp speed

British informal at a rate of knots, like the clappers, like billy-o

North American informal lickety-split

literary apace

hurriedly, speedily, quickly, in a hurry;

impetuously, impulsively, recklessly, precipitately, precipitously, rashly, incautiously, imprudently, on the spur of the moment, prematurely