speed - noun

distance travelled per unit time

a rate (usually rapid) at which something happens

changing location rapidly

the ratio of the focal length to the diameter of a (camera) lens system

a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression

speed - verb

• move fast
• move faster
• move very fast
• travel at an excessive or illegal velocity
• cause to move faster

speed - thesaurus

accelerate   amphetamine   fastness   hasten   hie   hotfoot   hurry   hurrying   quicken   race   rush   speeding   swiftness   upper   velocity   zip