Synonyms and related words :
PDQ, agilely, amain, animatedly, anxiously, apace, at flank speed, at once, at the double, avidly, breathlessly, briefly, by forced marches, cursorily, decisively, directly, double-quick, eagerly, enthusiastically, expeditiously, fast, feverishly, flat-out, fleetingly, flickeringly, flittingly, for a moment, forthwith, furiously, hand over fist, hand over hand, hastily, headlong, hell for leather, hell-bent, hell-bent for election, helter-skelter, hotfoot, hurriedly, hurry-scurry, immediately, impatiently, impetuously, impulsively, in an instant, in double time, in double-quick time, in high, in high gear, in no time, in passing, in seven-league boots, instanter, instantly, keenly, lickety-cut, lickety-split, momentarily, nimbly, on the double, on the instant, on the run, on the spot, pell-mell, post, posthaste, precipitately, pretty damned quick, promptly, pronto, quick, rapidly, rashly, readily, recklessly, right away, right off, shortly, slapdash, smartly, snappily, speedily, spryly, straightaway, straightway, subito, suddenly, summarily, superficially, swiftly, transiently, trippingly, under forced draft, vivaciously, whip and spur, with a rush, with alacrity, with all haste, with all speed, with dispatch, with giant strides, with gusto, with haste, with open arms, with rapid strides, with relish, with speed, with zest, without delay, without further delay, zestfully