adjective, quicker, quickest.
done, proceeding, or occurring with promptness or rapidity, as an action, process, etc.; prompt; immediate: a quick response.
that is over or completed within a short interval of time: a quick shower.
moving, or able to move, with speed: a quick fox; a quick train.
swift or rapid, as motion: a quick flick of the wrist.
easily provoked or excited; hasty: a quick temper.
keenly responsive; lively; acute: a quick wit.
acting with swiftness or rapidity: a quick worker.
prompt or swift to do something: quick to respond.
prompt to perceive; sensitive: a quick eye.
prompt to understand, learn, etc.; of ready intelligence: a quick student.
(of a bend or curve) sharp: a quick bend in the road.
consisting of living plants: a quick pot of flowers.
brisk, as fire, flames, heat, etc.
endowed with life.
having a high degree of vigor, energy, or activity.
living persons: the quick and the dead.
the tender, sensitive flesh of the living body, especially that under the nails: nails bitten down to the quick.
the vital or most important part.
Chiefly British.
a line of shrubs or plants, especially of hawthorn, forming a hedge.
a single shrub or plant in such a hedge.
adverb, quicker, quickest.
cut to the quick, to injure deeply; hurt the feelings of: Their callous treatment cut her to the quick.

before 900; Middle English quik lively, moving, swift; Old English cwic, cwicu living; cognate with Old Saxon quik, German queck, keck, Old Norse kvikr; akin to Latin vīvus living (see vital), Sanskrit jivas living, Greek bíos life (see bio-), zoḗ animal life (see zoo-)

quickness, noun
unquick, adjective
unquickly, adverb
unquickness, noun

1. fast, quick, rapid, swift (see synonym study at the current entry) ; 2. quick, quickly (see usage note at the current entry).

1. fleet, expeditious. Quick, fast, swift, rapid describe speedy tempo. Quick applies particularly to something practically instantaneous, an action or reaction, perhaps, of very brief duration: to give a quick look around; to take a quick walk. Fast and swift refer to actions, movements, etc., that continue for a time, and usually to those that are uninterrupted; when used of communication, transportation, and the like, they suggest a definite goal and a continuous trip. Swift the more formal word, suggests the greater speed: a fast train; a swift message. Rapid less speedy than the others, applies to a rate of movement or action, and usually to a series of actions or movements, related or unrelated: rapid calculation; a rapid walker. 5. abrupt, curt, short, precipitate. 7. nimble, agile, brisk. 10. See sharp.

1, 10. slow.

The difference between the adverbial forms quick and quickly is frequently stylistic. Quick is more often used in short spoken sentences, especially imperative ones: Come quick! The chimney is on fire. Quickly is the usual form in writing, both in the preverb position (We quickly realized that attempts to negotiate would be futile) and following verbs other than imperatives (She turned quickly and left). See also slow, sure.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
quick (kwɪk)
1.  (of an action, movement, etc) performed or occurring during a comparatively short time: a quick move
2.  lasting a comparatively short time; brief: a quick flight
3.  accomplishing something in a time that is shorter than normal: a quick worker
4.  characterized by rapidity of movement; swift or fast: a quick walker
5.  immediate or prompt: a quick reply
6.  (postpositive) eager or ready to perform (an action): quick to criticize
7.  responsive to stimulation; perceptive or alert; lively: a quick eye
8.  eager or enthusiastic for learning: a quick intelligence
9.  easily excited or aroused: a quick temper
10.  skilfully swift or nimble in one's movements or actions; deft: quick fingers
11.  archaic
 a.  alive; living
 b.  (as noun) living people (esp in the phrase the quick and the dead)
12.  archaic, dialect or lively or eager: a quick dog
13.  (of a fire) burning briskly
14.  composed of living plants: a quick hedge
15.  dialect (of sand) lacking firmness through being wet
16.  archaic quick with child pregnant, esp being in an advanced state of pregnancy, when the movements of the fetus can be felt
17.  any area of living flesh that is highly sensitive to pain or touch, esp that under a toenail or fingernail or around a healing wound
18.  the vital or most important part (of a thing)
19.  short for quickset
20.  cut someone to the quick to hurt someone's feelings deeply; offend gravely
21.  in a rapid or speedy manner; swiftly
22.  soon: I hope he comes quick
23.  a command requiring the hearer to perform an action immediately or in as short a time as possible
[Old English cwicu living; related to Old Saxon quik, Old High German queck, Old Norse kvikr alive, Latin vīvus alive, Greek bios life]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

O.E. cwic "living, alive," from P.Gmc. *kwikwaz (cf. O.Fris. quik, O.N. kvikr "living, alive," O.H.G. quec "lively," Ger. keck "bold"), from PIE base *gwiwo- "to live" (see bio-). Sense of "lively, swift" developed by c.1300, on notion of "full of life."
"NE swift or the now more common fast may apply to rapid motion of any duration, while in quick (in accordance with its original sense of 'live, lively') there is a notion of 'sudden' or 'soon over.' We speak of a fast horse or runner in a race, a quick starter but not a quick horse. A somewhat similar feeling may distinguish NHG schnell and rasch or it may be more a matter of local preference." [Buck]
Quickie "sex act done hastily" is from 1940. Quicklime (c.1400) is loan-translation of L. calx viva.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

quick (kwĭk)
Sensitive or raw exposed flesh, as under the fingernails. adj. quick·er, quick·est

  1. Pregnant.

  2. Alive.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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