Synonyms and related words :
amain, apace, at flank speed, at once, by forced marches, cursorily, double-quick, expeditiously, fast, feverishly, furiously, hand over hand, hastily, hell for leather, hell-bent, hell-bent for election, helter-skelter, hotfoot, hurriedly, hurry-scurry, immediately, in double time, in double-quick time, in high, in high gear, in passing, in seven-league boots, instantly, lickety-cut, lickety-split, on the double, on the run, pell-mell, post, posthaste, promptly, quick, quickly, rapidly, slapdash, snappily, speedily, superficially, swiftly, trippingly, under forced draft, whip and spur, with a rush, with all haste, with dispatch, with giant strides, with haste, with rapid strides, with speed