speed

nouns

distance travelled per unit time
speed, velocity
is derived from
speedy
a rate (usually rapid) at which something happens
"the project advanced with gratifying speed"
fastness, speed, swiftness
is derived from
speedy
changing location rapidly
hurrying, speed, speeding
is derived from
speedy
the ratio of the focal length to the diameter of a (camera) lens system
f number, focal ratio, speed, stop number
a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
amphetamine, pep pill, speed, upper

verbs

move fast
"He rushed down the hall to receive his guests"; "The cars raced down the street"
belt along, bucket along, cannonball along, hasten, hie, hotfoot, pelt along, race, rush, rush along, speed, step on it
is derived from
speeding
see also
speed up
move faster
"The car accelerated"
accelerate, quicken, speed, speed up
move very fast
"The runner zipped past us at breakneck speed"
hurry, speed, travel rapidly, zip
see also
speed up
travel at an excessive or illegal velocity
"I got a ticket for speeding"
speed
is derived from
speeder
is derived from
speeding
is a type of (narrower)
change location; move, travel, or proceed, also metaphorically
"How fast does your new car go?"; "We travelled from Rome to Naples by bus"; "The policemen went from door to door looking for the suspect"; "The soldiers moved towards the city in an attempt to take it before night fell"; "news travelled fast"
go, locomote, move, travel
cause to move faster
"He accelerated the car"
accelerate, speed, speed up