fast

IPA: fˈæst

(Britain, rail transport) A train that calls at only some stations it passes between its origin and destination, typically just the principal stations
The act or practice of fasting, religious abstinence from food
One of the fasting periods in the liturgical year
A surname.
Initialism of Focused assessment with sonography for trauma.

(intransitive) To practice religious abstinence, especially from food.
(intransitive) To reduce or limit one's nutrition intake for medical or health reasons, to diet.
(transitive) (academic) To cause a person or animal to abstain, especially from eating.

(dated) Firmly or securely fixed in place; stable.
Firm against attack; fortified by nature or art; impregnable; strong.
(of people) Steadfast, with unwavering feeling. (Now mostly in set phrases like fast friend(s).)
Moving with great speed, or capable of doing so; swift, rapid.
(nuclear physics, of a neutron) Having a kinetic energy between 1 million and 20 million electron volts; often used to describe the energy state of free neutrons at the moment of their release by a nuclear fission or nuclear fusion reaction (i.e., before the neutrons have been slowed down by anything).
Of a place, characterised by business, hustle and bustle, etc.
Causing unusual rapidity of play or action.
(computing, of a piece of hardware) Able to transfer data in a short period of time.
Deep or sound (of sleep); fast asleep (of people).
(of dyes or colours) Not running or fading when subjected to detrimental conditions such as wetness or intense light; permanent.
(obsolete) Tenacious; retentive.
(dated) Having an extravagant lifestyle or immoral habits.
Ahead of the correct time or schedule.
(of photographic film) More sensitive to light than average.

In a firm or secure manner, securely; in such a way as not to be moved; safe, sound .
(of sleeping) Deeply or soundly .
Immediately following in place or time; close, very near .
Quickly, with great speed; within a short time .
Ahead of the correct time or schedule.

Examples of "fast" in Sentences

Win, and win fast, is the mandate NFL head coaches carry into their jobs.
His lead: “Attention White House speechwriters: The term fast track is no longer in vogue.”
The phrase fast track has a long history in horse racing, to mean “dry, conducive to speed.”
That's why students of the U.S. S.hool of Music get ahead twice as fast -- _three times as fast_ as those who study old-fashioned, plodding methods.
BRIDEGROOM is with them, the SONS OF THE NUPTIALS cannot fast: the days will come when the BRIDEGROOM will be taken away from them, and then will they fast_, "Matt ix.
_ (held) fast in his antagonist's clutch_, 637; fýrbendum fäst, _fast in the forged hinges_, 723; handa fäst, 1291, etc.; hygebendum fäst (beorn him langað), _fast (shut) in the bonds of his bosom, the man longs for_ (i.e. in secret), 1879.
_ (held) fast in his antagonist's clutch_, 637; fȳrbendum fæst, _fast in the forged hinges_, 723; handa fæst, 1291, etc.; hygebendum fæst (beorn him langað), _fast (shut) in the bonds of his bosom, the man longs for_ (i.e. in secret), 1879.