1
as in speed
a high rate of movement or performance
the amazing fastness with which the boy took his shower had us wondering if he'd used any water
Synonyms & Similar Words
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Antonyms & Near Antonyms
2
as in stronghold
a structure or place from which one can resist attack
the guerillas retreated to their network of hidden fastnesses deep within the mountains
Synonyms & Similar Words
3
as in loyalty
adherence to something to which one is bound by a pledge or duty
his uncompromising fastness to the cause of freedom was beyond question
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of fastness
Like the pressing, the hard work mentality and fastness of transition for example.
—
Andy Jones, New York Times, 29 May 2025
Editors and contributors compare dozens of sets and look for qualities such as softness, durability, breathability, color fastness, and how well the linens launder and withstand wear.
—Yelena Moroz Alpert, Architectural Digest, 16 May 2025
The system ensures good wet-rubbing and dry-rubbing fastness and softness on all kinds of fabrics.
—Angela Velasquez, Sourcing Journal, 30 Dec. 2024
The system ensures good wet-rubbing and dry-rubbing fastness and softness on all kinds of fabrics.
—Angela Velasquez, Sourcing Journal, 30 Dec. 2024
Tat-Fung’s Downtown collection of blue, black and gray fabrics outperform conventional denim in color fastness, according to Tim Huesemann, the mill’s sales director.
—Angela Velasquez, Sourcing Journal, 22 Oct. 2024
This advancement enables dyeing with Basic dyes, promising enhanced dye uptake and superior wash fastness compared to traditional Reactive dyes.
—Sj Studio, Sourcing Journal, 13 Sep. 2024
The Neutral Ground had cowboys (or Cow Boys), Indians, cavalry attacks and rescues, and secret woodland fastnesses known only to the canniest frontiersman.
—Ian Frazier, The New Yorker, 15 July 2024
The technology uses specific formaldehyde-free agents to enhance the dyeing process of raw garments, resulting in a bright and deep indigo color, improving wash and rubbing fastness, and increasing lightfastness and levelness.
—Andrea Onate, WWD, 12 June 2024
Andy Jones, New York Times, 29 May 2025
Editors and contributors compare dozens of sets and look for qualities such as softness, durability, breathability, color fastness, and how well the linens launder and withstand wear.
—Yelena Moroz Alpert, Architectural Digest, 16 May 2025
The system ensures good wet-rubbing and dry-rubbing fastness and softness on all kinds of fabrics.
—Angela Velasquez, Sourcing Journal, 30 Dec. 2024
The system ensures good wet-rubbing and dry-rubbing fastness and softness on all kinds of fabrics.
—Angela Velasquez, Sourcing Journal, 30 Dec. 2024
Tat-Fung’s Downtown collection of blue, black and gray fabrics outperform conventional denim in color fastness, according to Tim Huesemann, the mill’s sales director.
—Angela Velasquez, Sourcing Journal, 22 Oct. 2024
This advancement enables dyeing with Basic dyes, promising enhanced dye uptake and superior wash fastness compared to traditional Reactive dyes.
—Sj Studio, Sourcing Journal, 13 Sep. 2024
The Neutral Ground had cowboys (or Cow Boys), Indians, cavalry attacks and rescues, and secret woodland fastnesses known only to the canniest frontiersman.
—Ian Frazier, The New Yorker, 15 July 2024
The technology uses specific formaldehyde-free agents to enhance the dyeing process of raw garments, resulting in a bright and deep indigo color, improving wash and rubbing fastness, and increasing lightfastness and levelness.
—Andrea Onate, WWD, 12 June 2024
Recent Examples of Synonyms for fastness
Noun
-
More deception tactics were used, Caine said, and support aircraft pushed out in front of the main strike group at a high altitude and speed to sweep for enemy fighters and surface-to-air missile threats.—
Stephen Sorace,
FOXNews.com,
22 June 2025
-
As the usage of artificial intelligence — benign and adversarial — increases at breakneck speed, more cases of potentially harmful responses are being uncovered.—
Neha Hegde,
CNBC,
22 June 2025
Noun
-
In recent years, grizzlies have spilled out of their stronghold in the Greater Yellowstone ecosystem — a broad swath of Montana, Idaho, and Wyoming — and into human territory, where coexistence gets messy.—
Christine Peterson,
Vox,
27 June 2025
-
America Great Again movement against the conservative legal stronghold that helped Trump reshape the courts during his first term by offering up conservative judges as suggestions to fill benches across the country.—
Zach Schonfeld,
The Hill,
4 June 2025
Noun
-
There’s a smarter, more future-facing loyalty model: one that integrates environmental, social, and governance (ESG) signals directly into how customers are scored, segmented, and rewarded.—
Gabriele Buffo,
Fortune,
26 June 2025
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Moreover, a unified brand identity not only enables greater recognition but also helps build trust, gain loyalty, and, as a result, increase conversions.—
Roman Vrublivskyi,
Forbes.com,
26 June 2025
Noun
-
Only five pitchers have higher average fastball velocity, and all of them are short relievers.—
Daniel R. Epstein,
Forbes.com,
21 June 2025
-
Abbott looks like a regular Joe, and his average fastball velocity of 92.2 mph is in just the 19th percentile in baseball.—
C. Trent Rosecrans,
New York Times,
20 June 2025
Noun
-
Iran's most advanced and hardened nuclear facility, the Fordow plant in the country's northwest, is a fortress.—
Adeola Adeosun,
MSNBC Newsweek,
21 June 2025
-
The then-British fortress was famously captured by Ethan Allen and Benedict Arnold in May 1775, marking a pivotal moment in the early stages of the Revolutionary War.—
Andrea Margolis,
FOXNews.com,
17 June 2025
Noun
-
Police shot and killed Mateen, who had pledged allegiance to an Islamic State militant group.—
Skyler Swisher,
The Orlando Sentinel,
17 June 2025
-
Gray takes a rather more conventional approach here to the genre tropes in Lee Zachariah’s sturdy screenplay, but provides more than enough rapid-fire shootouts, impressive stunt choreography, shifting allegiances and moderately clever plot twists to keep things interesting.—
Joe Leydon,
Variety,
13 June 2025
Noun
-
Douglas County is trying to do something no other Colorado county has done in nearly 50 years — adopt home-rule authority that would give the conservative bastion south of Denver more autonomy and powers of self-governance.—
John Aguilar,
Denver Post,
8 June 2025
-
The Federalist Society has become a bastion of that project, with Leo serving as its longtime former executive vice president.—
Zach Schonfeld,
The Hill,
4 June 2025
Noun
-
The exchange best exemplified the unwavering dedication Armani has for his job.—
Sandra Salibian,
Footwear News,
20 June 2025
-
Throughout her time away, it has been reported that James has impressed many within WWE with her strong work ethic and dedication to her recovery.—
Andrew Ravens,
MSNBC Newsweek,
20 June 2025
Cite this Entry
“Fastness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fastness. Accessed 2 Jul. 2025.
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