speed

1 of 2

noun

1
a
: rate of motion: such as
(2)
: the magnitude of a velocity irrespective of direction
b
: the act or state of moving swiftly : swiftness
c
2
: swiftness or rate of performance or action : velocity sense 3a
3
a
: the sensitivity of a photographic film, plate, or paper expressed numerically
b
: the time during which a camera shutter is open
c
: the light-gathering power of a lens or optical system
4
: a transmission gear in automotive vehicles or bicycles
usually used in combination
a ten-speed bicycle
5
: someone or something that appeals to one's taste
just my speed
6
: methamphetamine
also : a related stimulant drug and especially an amphetamine
7
archaic : prosperity in an undertaking : success
speedster noun

speed

2 of 2

verb

sped ˈsped How to pronounce speed (audio) or speeded; speeding

intransitive verb

1
a
: to make haste
sped to her bedside
b
: to go or drive at excessive or illegal speed
2
: to move, work, or take place faster : accelerate
the heart speeds up
3
a
archaic : to prosper in an undertaking
b
archaic : get along, fare

transitive verb

1
a
: to cause to move quickly : hasten
b
: to increase the speed of : accelerate
c
: to wish Godspeed to
2
a
: to further the success of
b
archaic : to cause or help to prosper : aid
3
: to send out
speed an arrow
speeder noun
Phrases
at speed
chiefly British
up to speed
: operating at full effectiveness or potential
Choose the Right Synonym for speed

haste, hurry, speed, expedition, dispatch mean quickness in movement or action.

haste applies to personal action and implies urgency and precipitancy and often rashness.

marry in haste

hurry often has a strong suggestion of agitated bustle or confusion.

in the hurry of departure she forgot her toothbrush

speed suggests swift efficiency in movement or action.

exercises to increase your reading speed

expedition and dispatch both imply speed and efficiency in handling affairs but expedition stresses ease or efficiency of performance and dispatch stresses promptness in concluding matters.

the case came to trial with expedition
paid bills with dispatch

Examples of speed in a Sentence

Noun This instrument measures wind speed. The machine was operating at high speed. traveling at nearly the speed of light Under the right conditions the car can reach speeds over 200 miles an hour. The vehicle maintained a speed of 40 miles per hour. The work was done with remarkable speed. This computer works at a much faster processing speed than my old one. The machine chops up tree branches and leaves with speed and ease. Verb A group of kids sped past us on their bikes. They jumped in the car and sped away. A car was speeding down the street. An ambulance sped her to the hospital. I got pulled over twice last month because I was speeding on the highway.
Recent Examples on the Web
Noun
No one can question the Texas receiver’s speed (and 40-yard dash time). Jesse Newell, Kansas City Star, 14 Apr. 2024 According to the program’s website, the campus is expected to feature strength and conditioning rooms, speed and agility training areas, tumbling mat space, cold plunges, a therapeutic swim spa, turf training areas, batting cages and a golf simulator. Annika Bahnsen, Orange County Register, 14 Apr. 2024 Needing one final stop, the Lakers and Grizzlies scrambled for a loose ball, with James intercepting a pass while streaking the other way at full speed. Dan Woike, Los Angeles Times, 13 Apr. 2024 Wiggins is a top-tier athlete with rare recovery speed, and is capable of thriving in man or zone coverage. Eddie Brown, San Diego Union-Tribune, 13 Apr. 2024 Additionally, the department urged drivers to reduce speed and merge safely when passing through construction zones. Madeline Nguyen, The Arizona Republic, 12 Apr. 2024 For aerobic exercise like brisk walking or jogging, start slow and gradually increase speed by taking longer strides or more frequent strides. Bryant Stamford, The Courier-Journal, 11 Apr. 2024 There are six categories to classify the rotational speed of tornadoes (EF0-EF5) but just two levels to warn of tornado activity. Chad Murphy, The Enquirer, 2 Apr. 2024 Vehicle speed — When a vehicle’s speed increases, the tire-traction grip and ability to control the vehicle decreases. Star-Telegram Bot, Fort Worth Star-Telegram, 1 Apr. 2024
Verb
Keanu Reeves is speeding along to another franchise, with the John Wick star heading to Sonic the Hedgehog 3. Borys Kit, The Hollywood Reporter, 15 Apr. 2024 The troopers tumbled to the ground and the car sped away before coming to a stop a quarter of a mile away. Ernesto Londoño, New York Times, 14 Apr. 2024 Both vehicles were allegedly speeding on North Central Expressway near University Boulevard when Rice’s car hit the center median wall, leading to a chain reaction involving four other vehicles. Melissa Noel, Essence, 12 Apr. 2024 Good behavior in jail or prison can speed things up even more. Aysha Bagchi, USA TODAY, 11 Apr. 2024 Both are alleged to have been speeding in the left lane of North Central Expressway near University Boulevard. Angel Saunders, Peoplemag, 11 Apr. 2024 Witnesses reported seeing a speeding driver heading north on the southbound freeway in the fast lane near the border, the CHP said on its online log. Karen Kucher, San Diego Union-Tribune, 10 Apr. 2024 The driver of the speeding car, an 18-year-old, was arrested. Journal Sentinel, 7 Apr. 2024 When the environment is harsh and unpredictable, threatening survival, the timing of development tends to speed up, leading to individuals who mature quickly—recognizing and responding appropriately to danger as youngsters. Marc D. Hauser, TIME, 3 Apr. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'speed.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Noun

Middle English sped, speede, spede "luck, fortune, good fortune, success, assistance, benefit, rate of motion or progress," going back to Old English spēd "luck, success, riches, opportunity, power," spēdum (dative plural used adverbially) "swiftly," going back to West Germanic *spōdi- (whence also Old Saxon spōd "success, advantage," Middle Dutch spoed "prosperity, progress, haste," Old High German spuot "quickness, velocity"), derivative with the abstract noun suffix -ti- from the base of *spōan- "to succeed" (whence Old English spōwan "to succeed, thrive" [Class VII strong verb], Middle Dutch spoen "to strive," Old High German spuoen "to succeed"), going back to an o-grade derivative of the Indo-European verbal base *speh1- "thrive, prosper," whence also Old Church Slavic spějǫ, spěti "to have success," Lithuanian spė́ju, spė́ti "to manage (to do something)," Sanskrit sphā́yate "(s/he) grows fat, increases," Hittite išpāi "(s/he) gets full, is satiated"; as nominal derivatives Latin spēs "hope" (< *speh1-), Latin prosperus "agreeable to one's wishes, successful, prosperous," Old Russian sporŭ "abundant," Sanskrit sphiráḥ "fat" (< *sph1-ró-)

Verb

Middle English speden "to succeed, fare, assist, travel swiftly," going back to Old English spēdan, gespēdan "to have success, succeed, prosper," verbal derivative of spēd "luck, success" — more at speed entry 1

Note: Parallel Germanic formations are Old Saxon spōdian "to further, promote" and Old High German gispuoten "to make thrive."

First Known Use

Noun

before the 12th century, in the meaning defined at sense 7

Verb

before the 12th century, in the meaning defined at intransitive sense 3a

Time Traveler
The first known use of speed was before the 12th century

Dictionary Entries Near speed

Cite this Entry

“Speed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/speed. Accessed 18 Apr. 2024.

Kids Definition

speed

1 of 2 noun
1
a
: the act or state of moving swiftly : swiftness
b
: rate of motion : velocity
2
: quickness in movement or action
3
: a transmission gear in motor vehicles or bicycles
a 10-speed bicycle
4
: methamphetamine
also : a related drug

speed

2 of 2 verb
sped ˈsped How to pronounce speed (audio) or speeded; speeding
1
a
: to move or cause to move fast
b
: to go or drive at too high a speed
2
: to increase the speed of : accelerate
often used with up

Medical Definition

speed

noun
: methamphetamine
also : a related stimulant drug and especially an amphetamine

More from Merriam-Webster on speed

Last Updated: - Updated example sentences
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