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
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
Branagh returns as Hercule Poirot, who has retired to a Venetian fastness.
—Anthony Lane, The New Yorker, 15 Sep. 2023
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
Branagh returns as Hercule Poirot, who has retired to a Venetian fastness.
—Anthony Lane, The New Yorker, 15 Sep. 2023
Recent Examples of Synonyms for fastness
Noun
-
The entire bag can unzip to become a quilt if that’s more your speed.—
Alice Bennett,
Travel + Leisure,
29 May 2025
-
His speed should flourish in Florida’s up-tempo system and take some of the pressure off Princeton transfer Xaivian Lee to try to be Walter Clayton.—
The Athletic College Basketball,
New York Times,
29 May 2025
Noun
-
The findings reflect broader dissatisfaction among New Yorkers with the state's leadership and opens the door for Republicans to make substantial inroads in traditionally blue strongholds.—
Nick Mordowanec,
MSNBC Newsweek,
23 May 2025
-
While Illinois has long been known as Democratic stronghold, with nearly 55% of voters favoring Vice President Kamala Harris compared with 44% supporting Trump in November, McHenry County leans more to the right politically.—
Angie Leventis Lourgos,
Chicago Tribune,
14 May 2025
Noun
-
This kind of fierce loyalty has been crucial to Dropout’s growth.—
Jesse David Fox,
Vulture,
2 June 2025
-
This strategic alignment, with a focus on a seamless customer experience, fuels revenue growth, strengthens customer loyalty, cuts churn and positions the business for success.—
Julie Thomas,
Forbes.com,
2 June 2025
Noun
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Related – his fastball velocity is down to an average of 92.4 mph this season, a full 2 mph lost since 2023.—
Bill Plunkett,
Oc Register,
28 May 2025
-
Get serious about pipeline velocity, win rates and quota attainment.—
Emil Sayegh,
Forbes.com,
28 May 2025
Noun
-
The concerts take place from late April to mid-September at Castillo Sohail, a 10th-century fortress located by the sea in Fuengirola, Málaga province.—
Franchesca Guim,
Billboard,
21 May 2025
-
Strategic diversification across multiple jurisdictions can help create a financial fortress, better shielding wealth from unnecessary threats and better securing long-term financial stability.—
Blake Harris,
Forbes.com,
7 May 2025
Noun
-
Feeling abandoned, fans returned the favor, switching allegiances to the Lakers to remain with Doncic.—
Bobby Krivitsky,
Forbes.com,
29 May 2025
-
Some videos show workers raising their right fists and pledging allegiance before a Chinese flag, evidence of the ideological training that experts say is often mandatory for Uyghur workers on such job programs.—
David Pierson,
New York Times,
29 May 2025
Noun
-
While its craggy slopes may seem barren at first glance, the mountain is actually a bastion of Canarian biodiversity, with Teide violets, red bugloss and Tenerife lizards all calling the region home.—
Jared Ranahan,
Forbes.com,
28 May 2025
-
And at the helm of this bastion of truth stands a man of vision, a man of class, of fortitude, secretary, doctor extravagant —Dr. Lonnie Bunch.—
Dominic Patten,
Deadline,
11 May 2025
Noun
-
The guide is in line with the Space System Protection Standard, which summarizes NASA's continuous dedication to supporting the creation of exact cybersecurity standards for its space systems.—
Chuck Brooks,
Forbes.com,
28 May 2025
-
The scholarships are awarded to student caddies who demonstrate academic excellence, financial need, dedication on the golf course and exemplary character.—
Jad El Reda,
Los Angeles Times,
28 May 2025
Cite this Entry
“Fastness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fastness. Accessed 5 Jun. 2025.
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