Main entry: speed, speeding, hurrying
Definition: changing location rapidly
Main entry: pep pill, speed, amphetamine, upper
Definition: a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
Main entry: fastness, speed, swiftness
Definition: a rate (usually rapid) at which something happens
Usage: the project advanced with gratifying speed
Main entry: f number, focal ratio, stop number, speed
Definition: the ratio of the focal length to the diameter of a (camera) lens system
Definition: distance travelled per unit time
Main entry: speed, speed up, accelerate, quicken
Definition: move faster
Usage: The car accelerated
Main entry: accelerate, speed, speed up
Definition: cause to move faster
Usage: He accelerated the car
Main entry: zip, travel rapidly, hurry, speed
Definition: move very fast
Usage: The runner zipped past us at breakneck speed
Main entry: speed
Definition: travel at an excessive or illegal velocity
Usage: I got a ticket for speeding
Main entry: hasten, hotfoot, hie, cannonball along, bucket along, pelt along, belt along, step on it, race, speed, rush, rush along
Definition: move fast
Usage: He rushed down the hall to receive his guests; The cars raced down the street