fastness
noun
fast·ness
ˈfas(t)-nəs 
1
: the quality or state of being fast: such as
a
: the quality or state of being fixed
b
: the quality or state of being swift
c
: colorfast quality
d
: resistance (as of an organism) to the action of a usually toxic substance
2
a
: a fortified or secure place
b
: a remote and secluded place
vacationed in their mountain fastness
Synonyms
Examples of fastness in a Sentence
the amazing fastness with which the boy took his shower had us wondering if he'd used any water
the guerillas retreated to their network of hidden fastnesses deep within the mountains
Recent Examples on the Web
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
Fearing extermination, members of the Yezidi sect fled to their ancestral fastness on Mount Sinjar.
—Timothy William Waters, Foreign Affairs, 29 Mar. 2016
Branagh returns as Hercule Poirot, who has retired to a Venetian fastness.
—Anthony Lane, The New Yorker, 15 Sep. 2023
When using natural dyes, there tend to be issues with color fastness and shade consistency.
—Esha Chhabra, Forbes, 22 Feb. 2023
Unlike the Brahui the Burusho are very isolated in the mountainous fastness of Baltistan in northern Pakistan.
—Razib Khan, Discover Magazine, 20 Dec. 2010
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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
Fearing extermination, members of the Yezidi sect fled to their ancestral fastness on Mount Sinjar.
—Timothy William Waters, Foreign Affairs, 29 Mar. 2016
Branagh returns as Hercule Poirot, who has retired to a Venetian fastness.
—Anthony Lane, The New Yorker, 15 Sep. 2023
When using natural dyes, there tend to be issues with color fastness and shade consistency.
—Esha Chhabra, Forbes, 22 Feb. 2023
Unlike the Brahui the Burusho are very isolated in the mountainous fastness of Baltistan in northern Pakistan.
—Razib Khan, Discover Magazine, 20 Dec. 2010
Dictionary Entries Near fastness
Cite this Entry
“Fastness.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fastness. Accessed 18 Dec. 2024.
Copy CitationKids Definition
fastness
noun
fast·ness
ˈfas(t)-nəs
1
: the quality or state of being fast
2
: a fortified or secure place
Medical Definition
fastness
noun
fast·ness
ˈfas(t)-nəs
: resistance (as of an organism) to the action of a usually toxic substance
streptomycin fastness developed by a strain of tubercule bacillus
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