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
Is psyllium soluble or insoluble fiber?
—
Carolyn L. Todd, SELF, 23 Feb. 2026
Improving digestion: Flaxseeds contain both soluble and insoluble fiber.
—Bestreviews, Mercury News, 27 Jan. 2026
The main ingredient — chickpeas — is a nutritional powerhouse that provides protein along with both soluble and insoluble fibers, making a serving (or two) excellent for gut health.
—Gretchen McKay, Twin Cities, 15 Jan. 2026
Dietitians say the fruit's sweet pulp and tiny seeds provide both soluble and insoluble fiber, helping improve regularity while also supplying antioxidants and key minerals that support overall health.
—Deirdre Bardolf, FOXNews.com, 3 Jan. 2026
See All Example Sentences for insoluble
Carolyn L. Todd, SELF, 23 Feb. 2026
Improving digestion: Flaxseeds contain both soluble and insoluble fiber.
—Bestreviews, Mercury News, 27 Jan. 2026
The main ingredient — chickpeas — is a nutritional powerhouse that provides protein along with both soluble and insoluble fibers, making a serving (or two) excellent for gut health.
—Gretchen McKay, Twin Cities, 15 Jan. 2026
Dietitians say the fruit's sweet pulp and tiny seeds provide both soluble and insoluble fiber, helping improve regularity while also supplying antioxidants and key minerals that support overall health.
—Deirdre Bardolf, FOXNews.com, 3 Jan. 2026
See All Example Sentences for insoluble
Recent Examples of Synonyms for insoluble
Adjective
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Bottega Veneta’s Maxi Veneta bag and those impossible-to-find Jacquemus x Nike Moon shoes give it serious street style cred—reminding us to always incorporate statement accessories amongst everyday essentials.—
Kristina Rutkowski,
Vogue,
5 Mar. 2026
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However, what Meta fails to explain is that using the devices’ core AI features without authorizing human contractors in Kenya to watch the resulting footage is impossible.—
Victor Tangermann,
Futurism,
5 Mar. 2026
Adjective
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In a legal career that spanned more than four decades, Rosenbaum took on some of South Florida’s toughest, most hopeless cases.—
Rafael Olmeda,
Sun Sentinel,
5 Mar. 2026
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Every two years, would-be governors, senators, lawmakers, political newcomers and hopeless hopefuls snake through the second floor of the Capitol, taking a very public step toward power.—
Greg Bluestein,
AJC.com,
28 Feb. 2026
Cite this Entry
“Insoluble.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insoluble. Accessed 10 Mar. 2026.
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