speednoun
uk/spiːd/us/spiːd/speed noun (RATE OF MOVEMENT)
B1 [ C or U ] how fast something moves:
B2 [ U ] very fast movement:
[ U ] how fast something happens:
the rate at which light or sound travels:
[ C ] a gear noun :
[ C ] the rate at which a photographic film absorbs or reacts to light:
the length of time for which part of a camera is open to allow light to reach the film when a photograph is being taken:
More examples
- The hummingbird beats its wings at great speed.
- With this drill it's possible to adjust the speed of rotation.
- The engine shuts off automatically when the desired speed is reached.
- Slack off your speed as you approach the corner.
- The police car drove past at a terrific speed.
Thesaurus: synonyms and related words
Speed of motion
- at full/half throttle idiom
- brisk
- burst
- celerity
- clip
- clock
- going
- ground speed
- momentum
- pacy
- rapid
- rate
- speedy
- supersonic
- swift
- throttle
- top
- velocity
- zip
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speed noun (DRUG)
[ U ] slang for amphetamine (= a drug that makes the mind or body more active):
Thesaurus: synonyms and related words
Specific types of drug
- amyl nitrite
- antiretroviral
- blunt
- cisplatin
- coke
- corticosteroid
- designer drug
- dope
- downer
- hash
- junk
- marijuana
- methamphetamine
- mind-altering
- narcotic
- pep pill
- popper
- skunkweed
- stimulant
- weed
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Idiom(s)
speedverb [ I or T, usually + adv/prep ]
uk/spiːd/us/spiːd/sped or speeded, sped or speededto (cause to) move, go, or happen fast:
to be driving faster than you are legally allowed to do:
More examples
- O'er land and sea they sped.
- The car pulled off and sped up the road.
- The train sped through the station with a whoosh.
- We are trying to speed investment in the area.
- Four boys on motorbikes came speeding down the road.
Thesaurus: synonyms and related words
Increasing and decreasing speed of motion
- accelerant
- accelerate
- acceleration
- brake
- catch
- catch (sb) up
- decelerate
- downshift
- foot
- gun
- motor
- quicken
- retard
- retardation
- slacken
- slow
- slow (sb/sth) down/up
- spurt
- throttle (sth) back/down
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