English dictionary

Hint: In most browsers you can lookup any word by double click it.

English adjective: fast

1. fast acting or moving or capable of acting or moving quickly

SamplesFast film.
On the fast track in school.
Set a fast pace.
A fast car.

Similaraccelerated, alacritous, blistering, double-quick, express, fast-breaking, fast-paced, fleet, high-speed, high-velocity, hot, hurrying, immediate, instant, instantaneous, meteoric, prompt, quick, quick, rapid, rapid, red-hot, scurrying, smart, speedy, speedy, straightaway, swift, windy, winged

See alsohurried, sudden

Attributefastness, speed, swiftness


2. fast (used of timepieces) indicating a time ahead of or later than the correct time

SamplesMy watch is fast.


3. fast at a rapid tempo

SamplesThe band played a fast fox trot.

Similarallegretto, allegro, andantino, prestissimo, presto, vivace

Domain categorymusic


4. fast (of surfaces) conducive to rapid speeds

SamplesA fast road.
Grass courts are faster than clay.


Antonymsrough, unsmooth

5. fast resistant to destruction or fading

SamplesFast colors.

Similarimperviable, impervious


6. fast unrestrained by convention or morality

SamplesCongreve draws a debauched aristocratic society.
Deplorably dissipated and degraded.
Riotous living.
Fast women.

Synonymsdebauched, degenerate, degraded, dissipated, dissolute, libertine, profligate, riotous



7. fast hurried and brief

SamplesPaid a flying visit.
Took a flying glance at the book.
A quick inspection.
A fast visit.

Synonymsflying, quick



8. fast securely fixed in place

SamplesThe post was still firm after being hit by the car.

Synonymsfirm, immobile



9. fast unwavering in devotion to friend or vow or cause

SamplesA firm ally.
Loyal supporters.
The true-hearted soldier...of Tippecanoe.
Fast friends.

Synonymsfirm, loyal, truehearted



10. fast (of a photographic lens or emulsion) causing a shortening of exposure time

SamplesA fast lens.


Antonymsnoncausal, noncausative

English noun: fast

1. fast (act) abstaining from food


Broader (hypernym)abstinence

Narrower (hyponym)diet, dieting, hunger strike, Ramadan

English adverb: fast

1. fast quickly or rapidly (often used as a combining form)

SamplesHow fast can he get here?.
Ran as fast as he could.
Needs medical help fast.
Fast-running rivers.
Fast-breaking news.
Fast-opening (or fast-closing) shutters.

2. fast firmly or closely

SamplesHeld fast to the rope.
Her foot was stuck fast.
Held tight.


English verb: fast

1. fast (consumption) abstain from certain foods, as for religious or medical reasons

SamplesCatholics sometimes fast during Lent.

Pattern of useSomebody ----s

Broader (hypernym)abstain, desist, refrain

Narrower (hyponym)diet

2. fast (consumption) abstain from eating

SamplesBefore the medical exam, you must fast.

Pattern of useSomebody ----s

Broader (hypernym)abstain, desist, refrain

Narrower (hyponym)diet

Based on WordNet 3.0 copyright © Princeton University.
Web design: Orcapia v/Per Bang. English edition: .
2019 onlineordbog.dk