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IELTS BNC: 1245 COCA: 1390

speed
1 speed /ˈspiːd/ noun
plural speeds
1 speed
/ˈspiːd/
noun
plural speeds
Learner's definition of SPEED
1 
: the rate at which someone or something moves or travels（运动）速度
[noncount]
[count]
2 
: the rate at which something happens or is done（某事发生或进行的）速度
[noncount]
[count]
3 
[noncount] : the quality of being quick快；迅速
4 
[count] photography
a  : a measurement that indicates how quickly film reacts to light and that is expressed as a number (such as 100 or 200)曝光率；感光度
b  : the time during which a camera's shutter is open（相机）快门速度
5 
[count] : a gear in a vehicle or bicycle（汽车或自行车等的）排挡，变速器
6 
[noncount] informal : an illegal drug that makes a person feel more excited and full of energy苯丙胺，安非他明（一种兴奋剂）

at speed

chiefly British
: very quickly : at a fast speed迅速地；高速地

full speed ahead

— see 1full

up to speed

: having the latest information about something了解最新情况的
: having the knowledge that is needed to do or understand something掌握所需信息的
2 speed /ˈspiːd/ verb
speeds; sped /ˈspɛd/ or speeded; speeding
2 speed
/ˈspiːd/
verb
speeds; sped /ˈspɛd/ or speeded; speeding
Learner's definition of SPEED
1 
always followed by an adverb or preposition, [no object] : to move fast快速移动
2 
always followed by an adverb or preposition, [+ object] : to move (someone or something) somewhere very quickly快速运送
3 
[no object] : to drive faster than the legal speed limit超速驾驶
4 
[+ object] somewhat formal : to cause (an action, movement, process, etc.) to happen faster使加速；促进

speed up

[phrasal verb]
speed up or speed up (something or someone) or speed (something or someone) up
: to become faster or to make (something or someone) faster（使）加速
— see also speedup
IELTS BNC: 1245 COCA: 1390

speed

1 of 2

noun

ˈspēd How to pronounce speed (audio)
1
a
: rate of motion: such as
(1)
: velocity sense 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 : 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
ˈspēd-stər How to pronounce speed (audio)
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
: fast, rapidly
up to speed
: operating at full effectiveness or potential

Synonyms

Noun

Verb

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

Example Sentences

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. See More
Recent Examples on the Web
Noun
There was a lot of debate throughout the offseason regarding whether Tagovailoa has the arm strength to maximize Hill’s speed. Jonas Shaffer, Baltimore Sun, 14 Sep. 2022 Ketels from Wayne State, said even though there may be speed bumps, Georgia will ultimately be a winner from this legislation. Zachary Hansen, ajc, 14 Sep. 2022 Though Amazon is known for efficiency and speed, there may be a few snags along the way like with any online delivery service. Clare Mulroy, USA TODAY, 14 Sep. 2022 Dave Tremper, director of electronic warfare at the Pentagon, praised the speed with which SpaceX evaded that jamming with a software update. Mihir Tripathy, Smithsonian Magazine, 14 Sep. 2022 The new speed for ever more popular cold drinks is even more dramatic. Spencer Jakab, WSJ, 14 Sep. 2022 Current top speed estimates are around 160 mph, though the final figure might come in quite a bit higher. Basem Wasef, Robb Report, 14 Sep. 2022 Miller and Thomas say that speed is paramount and can help employees make decisions faster. Jessica Mathews, Fortune, 13 Sep. 2022 Because speed was never going to be an issue for him. Tom Green | Tgreen@al.com, al, 13 Sep. 2022
Verb
To speed up service amid a trend of complicated orders, Starbucks announced new kitchen designs and technology systems to help baristas work faster. Alexandra Meeks, CNN, 15 Sep. 2022 In June, President Biden invoked the Defense Production Act to speed the manufacture of heat pumps. Chris Moody, Washington Post, 14 Sep. 2022 Bass promises to streamline city processes to speed up projects receiving funds from the 2016 homeless housing bond. Doug Smith, Los Angeles Times, 4 Sep. 2022 Caches are temporary files that are stored on your device to speed up the load time. Toby Grey, BGR, 29 Aug. 2022 Meanwhile, the Centers for Disease Control and Prevention recently announced a shake-up at the organization including internal staffing moves and steps to speed up data releases. Cady Stanton, USA TODAY, 18 Aug. 2022 To speed up your oven reheat strategy, switch from bake to broil. Preheat the broiler. Karla Walsh, Better Homes & Gardens, 10 Aug. 2022 Already some manufacturers are using innovations like digital twins, which dynamically capture information that can speed up the production, product approvals, and certifications of new engines and aircrafts. Susan Galer, Forbes, 9 Aug. 2022 In May, Biden used the Defense Production Act to speed up domestic production. Jacob Scholl, The Salt Lake Tribune, 3 Aug. 2022 See More

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 7 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

Phrases Containing speed

See More
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IELTS BNC: 1245 COCA: 1390
speed

noun

ADJECTIVE | ... OF SPEED | VERB + SPEED | SPEED + VERB | SPEED + NOUN | PREPOSITION | PHRASES ADJECTIVE➤amazing, astonishing, breakneck, fast, good, great, high, incredible, lightning, phenomenal, remarkable, startling, surprising, terrific (especially BrE) 驚人的速度；非常危險的速度；快速；高速；令人難以置信的速度；閃電般的速度◇The new houses have been built with astonishing speed.這些新房子修建的速度快得驚人。◇He drove us to the hospital at breakneck speed.他以驚險的速度開車送我們去醫院。➤low, slow低速；慢速▸➤full, maximum, top, warp (informal, humorous, especially NAmE) 全速；最高速度；極速；超乎尋常的速度◇Business is moving at warp speed.貿易正以超乎尋常的速度推進。➤excess超速◇90% of car accidents involve excess speed.90% 的車禍與超速駕駛有關。➤constant, steady恆定的／平穩的速度▸➤average, normal平均／正常速度➤increased加快的速度➤operating, processing, processor, running運轉／處理／處理器／運行速度◇the increase in processor speeds for home computers家用計算機處理器速度的提升◇The machinery is regulated to a safe running speed.這台機器調到了安全的運行速度。➤broadband, connection, download寬帶／鏈接／下載速度◇We offer subscribers a download speed of 8 MB.我們為用戶提供 8 兆字節的下載速度。➤cruising, flying巡航／飛行速度➤supersonic超音速◇jets flying at supersonic speed超音速噴氣式飛機➤traffic (especially BrE) , etc.車流等速度▸➤air, wind風速➤engine發動機轉速➤shutter快門速度◇The camera will choose a fast shutter speed.照相機將選擇較快的快門速度。... OF SPEED➤burst一陣速度的爆發◇The Kenyan runner put on a sudden burst of speed over the last 50 yards.肯尼亞運動員在最後 50 碼突然加速。➤rate (NAmE) 速率◇He was traveling at a high rate of speed.他正以高速行駛。VERB + SPEED➤attain, reach到達⋯的速度◇The car reaches a speed of 60 miles per hour within five seconds.這款車能在 5 秒鐘之內提速到每小時 60 英里。➤build up, gain, gather, increase, pick up加速；提速◇The train pulled out of the station, slowly gathering speed.火車駛出車站，慢慢開始加速。➤lose失速▸➤kill, reduce減速；降速◇Motorists are asked to reduce their speed in wet conditions.要求駕駛員雨天行車要減慢速度。➤maintain保持速度◇The boat maintained a steady speed while the sea was calm.大海風平浪靜的時候，船保持平穩的速度。➤move at, run at, travel at以⋯速度移動／行駛／行進◇The glacier moves at an average speed of about six feet per day.冰川以平均每天 6 英尺的速度移動。◇Radio waves travel at the speed of light.無線電波以光速傳播。➤measure測量速度SPEED + VERB➤increase加速▸➤decrease減速SPEED + NOUN➤control, reduction, restriction (especially BrE) 速度控制；減速；限速▸➤record速度紀錄◇He set a new land speed record in this car.他開這輛車創了陸地行駛速度的新紀錄。➤bump, hump (BrE) 減速帶▸➤camera, trap超速行車監視攝像機；汽車超速監視區PREPOSITION➤at speed (= fast) 高速地◇The car was moving at speed when the accident happened.事故發生時，這輛車正高速行駛。◇at lightning speed以閃電般的速度➤in speed在速度上◇a significant increase in speed速度的顯著提高➤with speed以⋯速度◇Hedgehogs, though small, can move with surprising speed.刺猬儘管很小，但動起來速度驚人。➤speed of⋯速度◇The ships have a maximum speed of 18 knots.這些船的最快速度是 18 節。PHRASES➤at full speed, full speed以最快速度；全速◇He was running at full speed when a tendon snapped in his leg.他正全速奔跑時，腿部的一條肌腱斷裂了。➤full speed ahead全速前行◇The boat can be brought to a stop from full speed ahead within her own length.這艘船可以在一個船身的距離內從全速航行中停下來。➤the speed of light, the speed of sound光速；聲速◇Concorde crossed the Atlantic at twice the speed of sound.協和飛機以兩倍聲速飛越大西洋。➤a turn of speed (BrE) 緊急加速（性能）◇For a small car it has a good turn of speed.對小型轎車來說，這輛車的緊急加速性能挺不錯。

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