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 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 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
-
Water-jets provide more efficient propulsion at speeds above 34 miles per hour, the analyst told Newsweek, compared with propellers, which are efficient between 23 and 34 miles per hour.—
Ryan Chan,
MSNBC Newsweek,
3 Sep. 2025
-
The service offers speeds up to 300 Mbps, with no annual contracts or equipment fees.—
Roxanne Downer,
USA Today,
3 Sep. 2025
Noun
-
The open seat, covering Manhattan's West Side, has long been a Democratic stronghold, making the primary the real contest.—
Theo Burman,
MSNBC Newsweek,
3 Sep. 2025
-
Even agribusiness constituencies in the Brazilian heartland, long a Bolsonaro stronghold, recognize that Brazil cannot simply distance itself from Beijing.—
HUSSEIN KALOUT,
Foreign Affairs,
2 Sep. 2025
Noun
-
Unwavering loyalty Schrandt told ABC News that any deportations to Afghanistan are an unacceptable outcome.—
Chris Boccia,
ABC News,
5 Sep. 2025
-
Papers paired with flower or pre-rolls can drive incremental sales and encourage brand loyalty.—
Sara Payan,
Rolling Stone,
5 Sep. 2025
Noun
-
The velocity and pace were incredible.—
James Wallace,
New York Times,
5 Sep. 2025
-
Depth and velocity of the water are not always obvious; the ground or road may suddenly wash away and hidden dangers may exist; do not attempt to evacuate through floodwaters.—
Staff reports,
AZCentral.com,
4 Sep. 2025
Noun
-
What looked like a fortress of brands turned out to be a structure too bloated to compete.—
Jim Osman,
Forbes.com,
3 Sep. 2025
-
Cinderella Castle, built in 1971, was originally painted in grays, blues, and golds, mimicking a European-style palace-fortress with romanticized medieval elements, according to Disney.—
Jordan King,
MSNBC Newsweek,
1 Sep. 2025
Noun
-
Venezuela's top brass pledged allegiance to Maduro, but there is likely to be burgeoning concern in the military ranks about the impact of Western sanctions and embargos, weapons pipelines and maintenance issues, Solar said.—
Ellie Cook
John Feng,
MSNBC Newsweek,
3 Sep. 2025
-
While there’s no love triangle, The Long Walk treats its allegiances and enmities with a grandeur that rivals any romance, especially the connection between its hero, Ray Garraty (Cooper Hoffman), and his friend Peter McVries (David Jonsson).—
Alison Willmore,
Vulture,
3 Sep. 2025
Noun
-
Hundreds of thousands of people aimed to reach Germany, a bastion of economic stability and prosperity.—
Sebastian Shukla,
CNN Money,
5 Sep. 2025
-
Budapest, Hungary Cradled by the Danube’s curves, Budapest is a city where medieval bastions meet Ottoman bathhouses steaming beside Bauhaus blocks.—
Lewis Nunn,
Forbes.com,
3 Sep. 2025
Noun
-
Miller’s dedication and commitment to Louisville took off from that second whirlwind visit 15 years ago.—
Maggie Menderski,
The Courier-Journal,
29 Aug. 2025
-
This dedication can be seen in the firm’s approach, offering free and confidential consultations so each potential client can experience a personalized level of care.—
Chris Gallagher,
USA Today,
29 Aug. 2025
Cite this Entry
“Fastness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fastness. Accessed 8 Sep. 2025.
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