Synonyms & Antonyms of fast

(Entry 1 of 4)



Synonyms & Antonyms of fast (Entry 2 of 4)

1 moving, proceeding, or acting with great speed
  • the fast pace of construction resulted in our new house being done ahead of schedule

Synonyms for fast

Words Related to fast

Phrases Synonymous with fast

Near Antonyms for fast

Antonyms for fast

3 firmly positioned in place and difficult to dislodge
  • the rusty, old screws are so fast in the fitting that there's no hope of getting them out

Synonyms for fast

Words Related to fast

Near Antonyms for fast

Antonyms for fast

4 given to or marked by cheating and deception
  • rolling back odometers was just one of the fast practices that the used-car dealer was guilty of

Synonyms for fast

Words Related to fast

Near Antonyms for fast

Antonyms for fast

5 marked by the ability to withstand stress without structural damage or distortion
  • as the storm approached, we checked to see that every thing on the outside of the house was fast and locked in position

Synonyms for fast

Words Related to fast

Near Antonyms for fast

Antonyms for fast

7 having or showing quickness of mind
  • I don't know how to operate this machine, but I'm a fast learner

Synonyms for fast

Words Related to fast

Near Antonyms for fast

Antonyms for fast



Synonyms & Antonyms of fast (Entry 3 of 4)



Synonyms & Antonyms of fast (Entry 4 of 4)

as in diet

Synonyms & Near Synonyms for fast

Antonyms & Near Antonyms for fast

See the Dictionary Definition 

Frequently Asked Questions About fast

How does the adjective fast contrast with its synonyms?

Some common synonyms of fast are expeditious, fleet, hasty, quick, rapid, speedy, and swift. While all these words mean "moving, proceeding, or acting with celerity," fast and rapid are very close in meaning, but fast applies particularly to the thing that moves.

fast horses

When can expeditious be used instead of fast?

The words expeditious and fast are synonyms, but do differ in nuance. Specifically, expeditious suggests efficiency together with rapidity of accomplishment.

the expeditious handling of an order

When is it sensible to use fleet instead of fast?

While the synonyms fleet and fast are close in meaning, fleet adds the implication of lightness and nimbleness.

fleet runners

In what contexts can hasty take the place of fast?

Although the words hasty and fast have much in common, hasty suggests hurry and precipitousness and often connotes carelessness.

a hasty inspection

When would quick be a good substitute for fast?

In some situations, the words quick and fast are roughly equivalent. However, quick suggests promptness and the taking of little time.

a quick wit

When might rapid be a better fit than fast?

The meanings of rapid and fast largely overlap; however, rapid applies to the movement itself, rather than to the thing that moves.

rapid current

When is speedy a more appropriate choice than fast?

The words speedy and fast can be used in similar contexts, but speedy implies quickness of successful accomplishment and may also suggest unusual velocity.

speedy delivery of mail

When could swift be used to replace fast?

While in some cases nearly identical to fast, swift suggests great rapidity coupled with ease of movement.

returned the ball with one swift stroke

Learn More About fast

Time Traveler for fast

Time Traveler

The first known use of fast was before the 12th century

See more words from the same century

Thesaurus Entries Near fast




See More Nearby Entries 

Cite this Entry

“Fast.” Thesaurus, Merriam-Webster, Accessed 25 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on fast

Nglish: Translation of fast for Spanish Speakers

Britannica English: Translation of fast for Arabic Speakers Encyclopedia article about fast


Test Your Vocabulary

Name That Food

  • a-light
  • Name these cookies!
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!