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1. Dictionary

   speed

   /spēd/

   noun

   • 1. the rate at which someone or something is able to move or operate: "we turned onto the runway and began to gather speed" Similar ratepacetempomomentum
   • ▪ rapidity of movement or action: "the accident was due to excessive speed" Similar rapidityswiftnessspeedinessalacrityquicknessfastnesscelerityvelocitydispatchpromptnessimmediacyexpeditiousnessexpeditionbrisknesssharpnesshastehurryhurriednessprecipitatenessaccelerationinformal:lickclipliterary:fleetnessrare:alacritousnessOpposite slownessdilatoriness
   • ▪ the rate at which something happens or is done: "they were bemused by the speed of events"
   • ▪ something that matches one's tastes or inclinations: informal "oak tables and chairs are more his speed"
   • 2. each of the possible gear ratios of a bicycle or motor vehicle.
   • 3. the light-gathering power or f-number of a camera lens.
   • ▪ the duration of a photographic exposure.
   • ▪ the sensitivity of photographic film to light.
   • 4. an amphetamine drug, especially methamphetamine. informal
   • 5. success; prosperity: archaic "wish me good speed"

   verb

   • 1. move quickly: "I got into the car and home we sped" Similar hurryracerunsprintdashboltdartrushhastenhurtlecareerstreakshootwhizzoomgo like lightninggo hell for leatherspank alongbowl alongrattle alongwhirlwhooshbuzzswoopflashblastchargestampedegallopsweephareflywingscurryscudscutterscrambleinformal:beltpelttearhotfoot itzapzipwhipscootscorchburn rubbergo like a bat out of hellbombbucketshiftput one's foot downgo like the clappersleg itwheechclipboogiehightailbarrellay rubberget the lead outvulgar slang:drag/tear/haul assliterary:fleetarchaic:posthierare:driveOpposite amblestroll
   • ▪ (of a motorist) travel at a speed that is greater than the legal limit: "the car that crashed was speeding" Similar drive too fastexceed the speed limitbreak the speed limit
   • 2. make prosperous or successful: archaic "may God speed you"
   • 3. take or be under the influence of an amphetamine drug: informal "more kids than ever are speeding, tripping, and getting stoned"

   Word Origin Old Englishspēd (noun), spēdan (verb), from the Germanic base of Old English spōwan ‘prosper, succeed’, a sense reflected in early usage.

   Derivatives

   • 1. speeder noun

   Scrabble Points: 8

   • S

     1

   • P

     3

   • E

     1

   • E

     1

   • D

     2

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   More definitions, origin and scrabble points

2. byjus.com › physics › measurement-of-speedWhat Is Speed? - Definition, Formula, Unit, Types & Measurement -...

   byjus.com › physics › measurement-of-speed

   • Cached

   Speed is measured as the ratio between the distance and time and the SI unit of speed is m/s. It is the change in the position of an object with respect to time. There are four types of speed: uniform speed, variable speed, average speed, and instantaneous speed.

3. www.dictionary.com › browse › speedSPEED Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › speed

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   Speed definition: rapidity in moving, going, traveling, proceeding, or performing; swiftness; celerity. See examples of SPEED used in a sentence.

4. dictionary.cambridge.org › dictionary › englishSPEED | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   the rate at which light or sound travels: The speed of light is 300 million metres per second. These planes travel at twice the speed of sound. [ C ] a gear :

5. www.merriam-webster.com › dictionary › speedSpeed Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › speed

   • Cached

   1. a. : rate of motion: such as. (1) : velocitysense 1. (2) : the magnitude of a velocity irrespective of direction. b. : the act or state of moving swiftly : swiftness. c. : impetus. 2. : swiftness or rate of performance or action : velocitysense 3a. 3. a.

6. www.vocabulary.com › dictionary › speedSpeed - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › speed

   Speed most often describes acceleration or a high rate of motion. When something picks up too much speed, it can run off course, like a kid on a bike zooming uncontrollably down a steep hill.

7. dictionary.cambridge.org › us › dictionarySPEED | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › us › dictionary

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   [ U ] how fast something happens: We were surprised at the speed of the response to our inquiry. It was the speed at which it all happened that shocked me. She got through her work with speed (= quickly) and efficiency. the speed of light/sound. the rate at which light or sound travels: The speed of light is 300 million meters per second.

8. www.collinsdictionary.com › dictionary › englishSPEED definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   a scalar measure of the rate of movement of a body expressed either as the distance travelled divided by the time taken (average speed) or the rate of change of position with respect to time at a particular point (instantaneous speed).