1
as in quickly
with great speed
run as fast as you can to get help
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in quite
to a full extent or degree
everyone in camp was fast asleep within minutes of hitting the sack
Synonyms & Similar Words
Antonyms & Near Antonyms
1
as in rapid
moving, proceeding, or acting with great speed
the fast pace of construction resulted in our new house being done ahead of schedule
Synonyms & Similar Words
Antonyms & Near Antonyms
2
as in loyal
firm in one's allegiance to someone or something
the two girls soon became fast and inseparable friends
Synonyms & Similar Words
Antonyms & Near Antonyms
3
as in tight
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 & Similar Words
Antonyms & Near Antonyms
4
as in deceptive
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 & Similar Words
Antonyms & Near Antonyms
5
as in sturdy
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 & Similar Words
Antonyms & Near Antonyms
6
as in short
not lasting for a considerable time
after a fast explanation of the procedure, we were turned loose to do the work
Synonyms & Similar Words
Antonyms & Near Antonyms
7
as in quick
having or showing quickness of mind
I don't know how to operate this machine, but I'm a fast learner
Synonyms & Similar Words
Antonyms & Near Antonyms
as in famine
Related Words
Dissimilar Words
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of fast
Lauren Landers, The Spruce, 10 Jan. 2026
Battlefield use has further demonstrated its effectiveness against fast-moving aerial threats.
—Aamir Khollam, Interesting Engineering, 10 Jan. 2026
Ella Gonzales, Fort Worth Star-Telegram, 8 Jan. 2026
But for patients and families with rare disease, the pace is never fast enough.
—Becky Quick, CNBC, 8 Jan. 2026
Bloomberg, Mercury News, 23 Oct. 2025
Jews then partake in a festive after-fast meal, turning the evening into a yom tov (festival).
—Krys'tal Griffin, Freep.com, 2 Oct. 2025
Tereza Pultarova, Space.com, 17 Oct. 2025
Top marks in the cross country ski department went to Rossignol’s X-Ium Premium+ Skate SX, an expert-level classic ski that’s fun and fast enough to place on the podium.
—Outside Editors, Outside, 16 Oct. 2025
See All Example Sentences for fast
Adverb
Adding rooting hormone helps hardwood cuttings root faster.
—Adjective
The Phoenix based chain sells salads, bowls, wraps, soups and snacks, offering a healthier fast food alternative.
—Noun
The battery uses the same vehicle-grade cells in Rivian’s consumer EVs and includes USB-C fast charging.
—Verb
Although the new commercial space ethos of building satellites fast and cheap has dominated Earth imaging from space for years, deep-space astronomy has so far been headed mostly in the opposite direction — trending toward more complex machines worth billions of dollars.
—Recent Examples of Synonyms for fast
Adverb
-
Rice quickly replaced Parolin with Fielder and sophomore forward Dylan Andrews with sophomore forward Pearson Carmichael.—
-
The video, narrated with dry sarcasm and visible exhaustion, quickly went viral.—
Adverb
-
Everything was really incorrect for the period—shiny, sparkly, overdone—but the actual shapes and silhouettes of his clothes are quite accurate.—
-
But the Panthers were also quite consistent in some ways.—
Adjective
-
Earthquakes' sudden, rapid shaking can cause fires, tsunamis, landslides or avalanches.—
-
Season One concludes with the Texas Tech geology graduate abandoning a well crew after tragedy strikes, only to achieve rapid success in his personal and work endeavors.—
Adjective
-
But beyond his professional accomplishments, Andy was a special person and a dear and loyal friend.—
-
The last time a president leaned on a loyal Fed chair to juice the economy with lower rates, the results were ugly.—
Adjective
-
Loveland caught eight passes for 137 yards for the Bears, who had closed the regular season with tight losses to San Francisco and Detroit.—
-
As temperatures drop and humidity plummets, the skin’s natural moisture levels decline faster, fine lines look more pronounced, and that tight, uncomfortable feeling can become a near-daily occurrence.—
Adjective
-
While not everyone gets their wishes, those with no interest in taking on the deceptive — and challenging — role of a Traitor likely won't be chosen.—
-
The legal claims included negligence, wrongful death, deceptive trade practices, and product liability.—
Adjective
-
With sturdy construction, ample shelf space, and glass doors, china cabinets are excellent for storing and displaying delicate china sets, trinkets, decorative plates, heirloom decor, and more.—
-
Be sure to cover your head and neck with your arms, and crawl under a sturdy table if possible.—
Adjective
-
Ehrlich noted the short careers for college athletes and wondered whether a union for collective bargaining is even possible.—
-
This short-sleeve pullover top is paired with a wide-leg pant to keep me cozy just about wherever my day takes me.—
Cite this Entry
“Fast.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fast. Accessed 12 Jan. 2026.
Love words? Need even more definitions?
Merriam-Webster unabridged
Share