English dictionary



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English noun: speed

1. speed (time) distance travelled per unit time


Synonymsvelocity


Broader (hypernym)rate


Narrower (hyponym)airspeed, angular velocity, c, escape velocity, groundspeed, hypervelocity, light speed, muzzle velocity, peculiar velocity, radial velocity, speed of light, steerageway, terminal velocity

2. speed (attribute) a rate (usually rapid) at which something happens


SamplesThe project advanced with gratifying speed.


Synonymsfastness, swiftness


Broader (hypernym)pace, rate


Narrower (hyponym)execution speed, graduality, gradualness, haste, hastiness, hurriedness, hurry, precipitation


Attributefast, slow

3. speed (act) changing location rapidly


Synonymshurrying, speeding


Broader (hypernym)motion, move, movement


Narrower (hyponym)acceleration, deceleration, quickening, scud, scudding, speedup

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


Synonymsf number, focal ratio, stop number


Broader (hypernym)ratio

5. speed (artifact) a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression


Synonymsamphetamine, pep pill, upper


Broader (hypernym)drug of abuse, excitant, stimulant, stimulant drug, street drug


Narrower (hyponym)amphetamine sulfate, amphetamine sulphate, bennie, Benzedrine, chalk, chicken feed, crank, deoxyephedrine, Dexedrine, dextroamphetamine sulphate, glass, ice, meth, methamphetamine, methamphetamine hydrochloride, Methedrine, shabu, trash


English verb: speed

1. speed (motion) move fast


SamplesHe rushed down the hall to receive his guests.
The cars raced down the street.


ExamplesThey speed up the hill


Synonymsbelt along, bucket along, cannonball along, hasten, hie, hotfoot, pelt along, race, rush, rush along, step on it


Pattern of useSomething ----s.
Somebody ----s


Broader (hypernym)go, locomote, move, travel


Narrower (hyponym)barge, buck, charge, dart, dash, flash, push forward, scoot, scud, shoot, shoot, shoot down, tear, thrust ahead


Antonymsdawdle, linger

2. speed (change) move faster


SamplesThe car accelerated.


ExamplesThese cars won't speed


Synonymsaccelerate, quicken, speed up


Pattern of useSomething ----s.
Somebody ----s.
Somebody ----s something.
Something ----s something


Broader (hypernym)deepen, intensify


Narrower (hyponym)brisk, brisk up, brisken


Antonymsdecelerate, slow, slow down, slow up, retard

3. speed (motion) move very fast


SamplesThe runner zipped past us at breakneck speed.


ExamplesThese cars won't speed


Synonymshurry, travel rapidly, zip


Pattern of useSomething is ----ing PP.
Somebody ----s PP


Broader (hypernym)go, locomote, move, travel


Narrower (hyponym)dart, fleet, flit, flutter, run, whizz, whizz along, zoom, zoom along

4. speed (motion) travel at an excessive or illegal velocity


SamplesI got a ticket for speeding.


ExamplesThese cars won't speed


Pattern of useSomething is ----ing PP.
Somebody ----s PP


Broader (hypernym)go, locomote, move, travel

5. speed (change) cause to move faster


SamplesHe accelerated the car.


Synonymsaccelerate, speed up


Pattern of useSomebody ----s something.
Somebody ----s somebody.
Something ----s somebody.
Something ----s something


Broader (hypernym)alter, change, modify


Antonymsdecelerate, slow down









Based on WordNet 3.0 copyright © Princeton University.
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