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
There’s also the rarer insoluble fiber supplements, which don’t dissolve, form a gel, or get fermented, like calcium polycarbophil (FiberCon) and wheat bran.
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Erica Sloan, SELF, 19 Feb. 2025
Some research suggests that the laxative aspect of certain fibers (say, insoluble types) could worsen symptoms like diarrhea.
—Erica Sloan, SELF, 19 Feb. 2025
Each pulse or lentil has different ratios of soluble and insoluble fibers.
—Merve Ceylan, Health, 11 Feb. 2025
Improve Digestive Health The insoluble fiber (the fiber that can't dissolve in water) in hazelnuts can help the intestines absorb water and increase the bulk of waste products, speeding their passage and expulsion.
—Heather Jones, Verywell Health, 28 Jan. 2025
See All Example Sentences for insoluble
Erica Sloan, SELF, 19 Feb. 2025
Some research suggests that the laxative aspect of certain fibers (say, insoluble types) could worsen symptoms like diarrhea.
—Erica Sloan, SELF, 19 Feb. 2025
Each pulse or lentil has different ratios of soluble and insoluble fibers.
—Merve Ceylan, Health, 11 Feb. 2025
Improve Digestive Health The insoluble fiber (the fiber that can't dissolve in water) in hazelnuts can help the intestines absorb water and increase the bulk of waste products, speeding their passage and expulsion.
—Heather Jones, Verywell Health, 28 Jan. 2025
See All Example Sentences for insoluble
Cite this Entry
“Insoluble.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insoluble. Accessed 30 Apr. 2025.
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