Synonyms for Quickly:

adv.

cunningly (adverb)
skillfully, masterfully, deviously, calculatingly, warily, smoothly, schemingly, slickly, snakily.
fast (adverb)
instantaneously, hastily, apace, swiftly, speedily, full tilt, promptly, briskly, hurriedly, rapidly, expeditiously, in nothing flat, fleetly, like a shot, quick, like a bat out of hell, chop-chop, immediately, in a flash, like a flash, instantly.
hastily (adverb)
hastily, urgently, feverishly, speedily, impatiently, Rushingly, rapidly, abruptly, dashingly, briskly, fleetly, swiftly, breathlessly, hurriedly.
punctually (adverb)
promptly, straight away, punctually, right away, expeditiously, forthwith, precisely.
quickly (adverb)
hurried, rapid, frenetic, urgent, hasty.
suddenly (adverb)
instantaneously, at once, unexpectedly, precipitously, all of a sudden, immediately, suddenly, instantly.
wittily (adverb)
foxily, intelligently, comically, deftly, cannily, astutely, slyly, craftily, ingeniously, artfully, shrewdly, brilliantly, sophisticatedly, urbanely, inventively, subtly, cleverly, trickily, drolly, resourcefully, scurrilously, adroitly, sarcastically, cunningly, wittily, sharply.

adv

cunningly (adverb)
ingeniously, slyly, cleverly, artfully, subtly, cunningly, shrewdly, schemingly, foxily, warily, deftly, masterfully, slickly, sharply, smoothly, calculatingly, trickily, astutely, skillfully, deviously, wittily, cannily, craftily, snakily.
energetically (adverb)
briskly.
fast (adverb)
Posthaste, fleetly, like greased lightning, like wildfire, chop-chop, like a shot, like a flash, full tilt.
hastily (adverb)
hastily, urgently, feverishly, speedily, impatiently, Rushingly, rapidly, abruptly, dashingly, briskly, fleetly, swiftly, breathlessly, hurriedly.
punctually (adverb)
precisely, instantly, punctually, promptly, straight away, speedily, forthwith, sharply, immediately, at once, right away, swiftly, expeditiously.
quickly (adverb)
rapid, swiftly, frenetic, hasty, speedily, in a flash/like a flash/quick as a flash, urgent, hurried, like mad, rapidly.
soon (adverb)
soon, in time.
suddenly (adverb)
immediately, precipitously, abruptly, all of a sudden, instantly, unexpectedly, suddenly, at once, hastily, instantaneously.
surprisingly (adverb)
unexpectedly.
very fast (adverb)
swiftly.
wittily (adverb)
foxily, intelligently, comically, deftly, cannily, astutely, slyly, craftily, ingeniously, artfully, shrewdly, brilliantly, sophisticatedly, urbanely, inventively, subtly, cleverly, trickily, drolly, resourcefully, scurrilously, adroitly, sarcastically, cunningly, wittily, sharply.

n.

passing, temporary, brief, fleeting, short-term, variable, transient, floating, inconstant, short-lived. succeeding, Lickety Split, in a flash, like a shot, like a house on fire, like a blue streak, like wildfire, subsequent, beyond, fast, in nothing flat, ensuing, hell-for-leather, like greased lightning, in the course of time, like a streak, following, Posthaste, full tilt, like the wind, flat out, like a bat out of hell, Since, in time, subsequently, after, like a flash. quickly (noun)
promptly, speedily, quick, rapidly, apace, chop-chop, cursorily.

Other synonyms:

soon, Lickety Split. flat out. fast. swiftly
Posthaste.
Other relevant words:
passing, ensuing, shooting, beyond, short-term, flying, Lickety Split, like a streak, succeeding, soon, rapid, cursorily, short-lived, subsequently, like a flash, temporary, flat out, like mad, hurried, sweeping, in nothing flat, like greased lightning, fast, floating, quick, in a flash, hurrying, hasty, like the wind, Since, apace, racing, subsequent, dashing, urgent, like wildfire, following, frenetic, like a bat out of hell, variable, like a house on fire, like a shot, rushing, transient, hell-for-leather, inconstant, full tilt, chop-chop, Posthaste, after, brief, like a blue streak, fleeting.

Usage examples for quickly

  1. Things had to be done and done quickly – The Lightning Conductor Discovers America by C. N. (Charles Norris) Williamson and A. M. (Alice Muriel) Williamson
  2. Dress as quickly as you can, and help your little brother. – Explorers of the Dawn by Mazo de la Roche
  3. He'll teach you to think quickly all right. – The Boy With the U. S. Survey by Francis Rolt-Wheeler