- indicating a time in advance of the correct time, as of a clock.
- noting or according to daylight-saving time.
- (of money, profits, etc.) made quickly or easily and sometimes deviously: He earned some fast change helping the woman with her luggage.
- cleverly quick and manipulative in making money: a fast operator when it comes to closing a business deal.
- (of a lens) able to transmit a relatively large amount of light in a relatively short time.
- (of a film) requiring a relatively short exposure time to attain a given density.
- (of a track condition) completely dry.
- (of a track surface) very hard.
OTHER WORDS FOR fast
Idioms about fast
Origin of fast1
synonym study for fast
Other definitions for fast (2 of 3)
Origin of fast2
OTHER WORDS FROM fastun·fast·ing, adjective
Other definitions for fast (3 of 3)
How to use fast in a sentence
Asian-Americans are a group of persuadable swing voters, growing faster than any other group in America today.
Their clear priorities : faster economic growth and promoting upward mobility for the middle and working classes.
Eggs, he says, are a good source of cysteine, an amino acid that helps the liver break down alcohol faster.
Perhaps the most Jewish part of the 6th Annual Latke Festival was that the food went way faster than the liquor.
The 247 was the first airplane really to define the form of a modern airliner, flying faster and higher than any predecessor.Flying Coach Is the New Hell: How Airlines Engineer You Out of Room|Clive Irving|November 25, 2014|DAILY BEAST
The clock struck ten, and clerks poured in faster than ever, each one in a greater perspiration than his predecessor.The Posthumous Papers of the Pickwick Club, v. 2(of 2)|Charles Dickens
One thing was certain: Grandfather Mole could travel much faster through the water than he could underground.The Tale of Grandfather Mole|Arthur Scott Bailey
She groaned aloud, and her tears flowed faster: Alessandro was making the baby's coffin.
She walked faster, and would not look at him; but he, in his ignorance, misinterpreted these signs egregiously.
Squinty turned around, standing on the edge of the little brook, and waited, his heart beating faster and faster.Squinty the Comical Pig|Richard Barnum
British Dictionary definitions for fast (1 of 2)
- proof against fadingthe colour is fast to sunlight
- (in combination)washfast
- requiring a relatively short time of exposure to produce a given densitya fast film
- permitting a short exposure timea fast shutter
Word Origin for fast
British Dictionary definitions for fast (2 of 2)
- an act or period of fasting
- (as modifier)a fast day
Derived forms of fastfaster, noun
Word Origin for fast
Medical definitions for fast (1 of 2)
Medical definitions for fast (2 of 2)
Other Idioms and Phrases with fast
In addition to the idioms beginning with fast
- fast and furious
- fast and loose
- fast buck
- fast lane
- fast track
- get nowhere (fast)
- hard and fast
- pull a fast one
- stand one's ground (fast)
- thick and fast