—adj. 1. done, proceeding, or occurring with promptness or rapidity, as an action, process, etc.; prompt; immediate: a quick response. 2. that is over or completed within a short interval of time: a quick shower. 3. moving, or able to move, with speed: a quick fox; a quick train. 4. swift or rapid, as motion: a quick flick of the wrist. 5. easily provoked or excited; hasty: a quick temper. 6. keenly responsive; lively; acute: a quick wit. 7. acting with swiftness or rapidity: a quick worker. 8. prompt or swift to do something: quick to respond. 9. prompt to perceive; sensitive: a quick eye. 10. prompt to understand, learn, etc.; of ready intelligence: a quick student. 11. (of a bend or curve) sharp: a quick bend in the road. 12. consisting of living plants: a quick pot of flowers. 13. brisk, as fire, flames, heat, etc.
14. Archaic. a. endowed with life.
b. having a high degree of vigor, energy, or activity.
—n. 1. living persons: the quick and the dead. 2. the tender, sensitive flesh of the living body, esp. that under the nails: nails bitten down to the quick. 3. the vital or most important part.
4. Chiefly Brit. a. a line of shrubs or plants, esp. of hawthorn, forming a hedge.
b. a single shrub or plant in such a hedge.
5. cut to the quick, to injure deeply; hurt the feelings of: Their callous treatment cut her to the quick.