- 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
Latinos, the fastest growing minority group in America, are even more underrepresented in Congress.
Young, hip, urban millennials are using tools like Instagram to become one of the fastest growing travel markets.‘We Out Here’: Inside the New Black Travel Movement|Charlise Ferguson|January 4, 2015|DAILY BEAST
Furthermore, mixed race children are the fastest growing population in the country.
The home care industry, one of the fastest-growing and lowest-paying sectors in the U.S., is over 90% female.
American fighter planes are the fastest, most maneuverable jets in the world.Pentagon Worries That Russia Can Now Outshoot U.S. Stealth Jets|Dave Majumdar|December 4, 2014|DAILY BEAST
His drill-like nose, his powerful fore-legs and big, strong feet all served to make him the fastest digger in Pleasant Valley.The Tale of Grandfather Mole|Arthur Scott Bailey
For the prize in the 5-ton class three put in an appearance, all the fastest racing yachts of the year.Yachting Vol. 2|Various.
The other scout went off at the fastest gallop of his steed, and soon disappeared beyond a turn in the road.A Lieutenant at Eighteen|Oliver Optic
He at once sent four of his fastest ships to get to windward of them, and attack their rear.The Political History of England - Vol. X.|William Hunt
But Lachlan, the horse I wished to leave, was the fastest of the four and kept ahead.A Tramp's Notebook|Morley Roberts
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