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
-
The corridor has almost 18,000 vehicles travel through it on average daily, with an average speed of 30.6 miles per hour, according to city data.—
David Clarey,
jsonline.com,
29 July 2025
-
Due to the risk of battery fires, Google said that devices with more than 400 charge cycles could see their capacity and charging speed drastically reduced.—
Ashley Belanger,
ArsTechnica,
28 July 2025
Noun
-
Broward County is the only solid Democratic stronghold in South Florida.—
Alexandra Glorioso,
Miami Herald,
22 July 2025
-
The district covers all of the heavily Democratic Cincinnati and eastern Hamilton County suburbs but also includes the Republican stronghold of Warren County.—
Hailey Roden,
The Enquirer,
2 July 2025
Noun
-
The company’s Movie Club loyalty program saw subscriptions grow 12% year-over-year and 50% versus 2019 to 1.45 million members, who accounted for nearly 30% of domestic box office.—
Jill Goldsmith,
Deadline,
1 Aug. 2025
-
The expanding Red Tab loyalty program is a big factor in scaling omnichannel efforts.—
Angela Velasquez,
Sourcing Journal,
1 Aug. 2025
Noun
-
The veteran left-hander’s weight and ERA were way up, and the velocity of his fastball was way down, a combination that was obvious to anyone who watched Quijada, a key component of the team’s bullpen in 2022, give up 11 runs in 7⅓ innings of eight spring-training games for a 13.50 ERA.—
Mike Digiovanna,
Oc Register,
25 July 2025
-
Too many teams confuse velocity with fragility, pushing features quickly, then burning time fixing avoidable outages.—
Kevin Meyer,
Forbes.com,
25 July 2025
Noun
-
It was built as a fortress for weapons in the early 20th century.—
Celia Fernandez,
CNBC,
13 July 2025
-
DeSantis and other state officials say locating the facility in the rugged and remote Florida Everglades is meant as a deterrent -- and naming it after the notorious federal prison of Alcatraz, an island fortress known for its brutal conditions, is meant to send a message.—
arkansasonline.com,
arkansasonline.com,
4 July 2025
Noun
-
The moment comes on the heels of Clark’s now-viral Nike ad comment aimed at Kelsey Plum, a subtle but effective reminder of just how visible brand allegiances have become across the league.—
Maggie Clancy,
Footwear News,
23 July 2025
-
Lunn’s brand of reform disrupted the corrupt and complacent, empowered talent without regard to political allegiance, and relentlessly focused on the common good of his constituents.—
Time,
Time,
22 July 2025
Noun
-
Connecticut has been a bastion of punk rock since the punk movement first began in the 1970s.—
Christopher Arnott,
Hartford Courant,
27 July 2025
-
These are not bastions of liberalism or wild progressives that have come out and said the public have a right to know what is in these documents.—
Khaleda Rahman,
MSNBC Newsweek,
22 July 2025
Noun
-
Duckworth encourages readers to cultivate long-term dedication to their goals, overcome setbacks, and maintain a growth mindset to achieve excellence.—
Jann E. Freed,
Forbes.com,
14 July 2025
-
Soliman's case has attracted wide attention since about 75 supporters held a press conference about his case just after his arrest: Local parents and medical professionals have been writing the immigration court, extolling his dedication to sick children.—
Patricia Gallagher Newberry,
The Enquirer,
14 July 2025
Cite this Entry
“Fastness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fastness. Accessed 4 Aug. 2025.
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