a corps perdu, abruptly, agilely, amain, apace, at flank speed, at half cock, at once, bang, by forced marches, carelessly, cursorily, dash, desperately, directly, double-quick, expeditiously, fast, feverishly, flat-out, furiously, hand over fist, hand over hand, happen what may, head over heels, headfirst, headforemost, headlong, heedlessly, heels over head, hell-bent, hell-bent for election, hell for leather, helter-skelter, holus-bolus, hotfoot, hotheadedly, hurriedly, hurry-scurry, immediately, impetuously, impulsively, in a flash, in a rush, in a wink, in double-quick time, in double time, in high, in high gear, in passing, in seven-league boots, incautiously, instantaneously, instantly, lickety-cut, lickety-split, like a flash, like a shot, like a thunderbolt, like crazy, like greased lightning, like mad, madly, nimbly, of a sudden, on short notice, on the double, on the run, overeagerly, overenthusiastically, overhastily, oversoon, overzealously, pell-mell, plop, plump, plunk, pop, post, posthaste, precipitantly, precipitately, precipitously, prematurely, promptly, pronto, quick, quickly, ramble-scramble, rapidly, rashly, recklessly, right away, sharp, slam-bang, slap-bang, slap, slapdash, smack, snappily, speedily, startlingly, sudden, suddenly, superficially, surprisingly, swiftly, thoughtlessly, too early, too soon, trippingly, unawares, under forced draft, unexpectedly, unpremeditatedly, unthinkingly, untimely, wantonly, whip and spur, wildly, with a rush, with all haste, with dispatch, with giant strides, with haste, with rapid strides, with speed, without delay, without notice, without warning