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
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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
-
In effect, platform engineering principles are all about streamlining and standardizing the development, deployment and management of applications to improve productivity, reduce operational overheads, shorten application cycle times and accelerate speed to market.—
Steve Millidge,
Forbes.com,
2 July 2025
-
The Eight of Wands shows speed, momentum, and unexpected progress entering your life.—
Meghan Rose,
Glamour,
1 July 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
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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
-
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
Noun
-
On Sunday, the velocity on his four-seam fastball was down 1 mph.—
Will Sammon,
New York Times,
29 June 2025
-
Still, for many of the players who were dominant during tennis’ defining era, today’s shrunken audiences are somewhat baffling, given the athleticism on display and the dizzying velocity of the aggro-baseliner game.—
Anthony Crupi,
Sportico.com,
27 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
-
The two men allegedly pledged allegiance to ISIS and had become radicalized over the internet.—
Tomás Mier,
Rolling Stone,
27 June 2025
-
There’s also a triangle with Stella being in the center — Stanley and Blanche pulling at the allegiance of Stella.—
David L. Coddon,
San Diego Union-Tribune,
22 June 2025
Noun
-
The Elizabeth of the 1950s certainly was no bastion of queerness.—
Raquel Willis,
Time,
19 June 2025
-
Climb the 115 steps to Tower 7 Observatory, a concrete bastion with sweeping ocean views, where U.S. soldiers once triangulated approaching enemy vessels.—
Tim Neville,
Travel + Leisure,
15 June 2025
Noun
-
The Eight of Pentacles asks you to embrace discipline and dedication, and trust that your efforts will pay off in the long run.—
Meghan Rose,
Glamour,
1 July 2025
-
The 30-year-old expression showcases Glen Grant's craftsmanship at its finest, demonstrating the distillery's dedication to quality.—
Joseph V Micallef,
Forbes.com,
1 July 2025
Cite this Entry
“Fastness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fastness. Accessed 11 Jul. 2025.
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