1) Against the clock 2) Apace 3) At a rapid pace 4) At a rate of knots 5) At full tilt 6) At the double 7) Briskly 8) Chop-chop 9) Computer programming tool 10) Efficiently 11) Fast 12) Hastily 13) Hurriedly 14) Immediately 15) In a flash 16) In the blink of an eye 17) Like a shot 18) Like greased lightning 1) Allegro 2) Apace 3) At once 4) At speed 5) Chop-chop 6) Chop chop 7) Cursorily 8) Deliverly 9) Fast 10) Hurriedly 11) Immediately 12) In a sec 13) In a snap 14) In a wink 15) In brief 16) In haste 17) In short order 18) Nimbly 19) On the double 20) Posthaste 21) Presto 22) Promptly 23) Pronto 24) Rapidly 
• (adv.) Speedily; with haste or celerity; soon; without delay; quick.
Quick'ly adverb Speedily; with haste or celerity; soon; without delay; quick. 
[adv] - with rapid movements
adverb with little or no delay; `the rescue squad arrived promptly`; `come here, quick!`rapidly adverb with rapid movements; `he works quickly`
with speed; rapidly; very soon.