as in impossible
incapable of being solved or accomplished
the seemingly insoluble mystery concerning the identity of the people who built these ancient structures
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Recent Examples of insoluble
Supports Digestion Okra contains soluble and insoluble fiber that supports digestive health.
—
Cristina Mutchler, Verywell Health, 21 May 2025
There are two general forms: soluble (which comes from the inner flesh of plants and dissolves in water) and insoluble (which generally comes from the skin of plants and does not dissolve in water).
—Julie Stewart, SELF, 25 Mar. 2025
Soluble fiber slows digestion to allow for better absorption of nutrients, while insoluble fiber adds bulk to the stool, which helps prevent constipation.
—Sarah Scott, Verywell Health, 31 Mar. 2025
The legumes contain both kinds of fiber—soluble and insoluble.
—Sarah Scott, Verywell Health, 31 Mar. 2025
See All Example Sentences for insoluble
Cristina Mutchler, Verywell Health, 21 May 2025
There are two general forms: soluble (which comes from the inner flesh of plants and dissolves in water) and insoluble (which generally comes from the skin of plants and does not dissolve in water).
—Julie Stewart, SELF, 25 Mar. 2025
Soluble fiber slows digestion to allow for better absorption of nutrients, while insoluble fiber adds bulk to the stool, which helps prevent constipation.
—Sarah Scott, Verywell Health, 31 Mar. 2025
The legumes contain both kinds of fiber—soluble and insoluble.
—Sarah Scott, Verywell Health, 31 Mar. 2025
See All Example Sentences for insoluble
Recent Examples of Synonyms for insoluble
Adjective
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No sign yet of the Qualcomm fixes from last month which triggered a U.S. government update mandate for federal staff, with a deadline that was impossible to hit.—
Zak Doffman,
Forbes.com,
8 July 2025
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Nowadays, both men and women are serving faster than ever before, with players regularly reaching service speeds that were once thought to be nearly impossible.—
Ben Church,
CNN Money,
8 July 2025
Adjective
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In a time when the suffering and seemingly hopeless prospects of America’s poor are known to all who have eyes to see, the only fig leaf available to hide the obscenity of this bill is the old partisan charge of waste, fraud and abuse.—
Clarence Page,
Chicago Tribune,
6 July 2025
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Valentine, Texas, stamps 10,000+ love letters each year For more than three decades, the small-town Valentine Post Office — also known as the Love Station — has processed thousands of love letters from hopeless romantics around the world.—
Brandi D. Addison,
Austin American Statesman,
2 July 2025
Cite this Entry
“Insoluble.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insoluble. Accessed 18 Jul. 2025.
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