insoluble
adjective
in·sol·u·ble
(ˌ)in-ˈsäl-yə-bəl 
: not soluble: such as
a
: incapable of being dissolved in a liquid and especially water
also
: soluble only with difficulty or to a slight degree
b
: having or admitting of no solution or explanation
an insoluble problem
c
archaic
: indissoluble
insoluble
noun
Examples of insoluble in a Sentence
a substance insoluble in water
the seemingly insoluble mystery concerning the identity of the people who built these ancient structures
Recent Examples on the Web
The peel contains insoluble fiber, which supports regularity and helps prevent constipation.
—
Kathleen Ferraro, Verywell Health, 29 Oct. 2025
Your Digestive Health May Improve Raisins are sources of soluble and insoluble fiber, which keep you full and regulate bowel movements.
—Lauren O'Connor, Health, 28 Oct. 2025
Studies have shown that rye bread, which is high in both soluble and insoluble fiber, can relieve constipation more than white bread or common laxatives without negative side effects.
—Erica Sweeney, EverydayHealth.com, 14 Oct. 2025
In a world with apparently insoluble problems, preventing famine is one of the easier ones.
—Alex De Waal, Foreign Affairs, 3 Oct. 2025
See All Example Sentences for insoluble
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Kathleen Ferraro, Verywell Health, 29 Oct. 2025
Your Digestive Health May Improve Raisins are sources of soluble and insoluble fiber, which keep you full and regulate bowel movements.
—Lauren O'Connor, Health, 28 Oct. 2025
Studies have shown that rye bread, which is high in both soluble and insoluble fiber, can relieve constipation more than white bread or common laxatives without negative side effects.
—Erica Sweeney, EverydayHealth.com, 14 Oct. 2025
In a world with apparently insoluble problems, preventing famine is one of the easier ones.
—Alex De Waal, Foreign Affairs, 3 Oct. 2025
See All Example Sentences for insoluble
Cite this Entry
“Insoluble.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/insoluble. Accessed 31 Oct. 2025.
Copy CitationKids Definition
insoluble
adjective
in·sol·u·ble
(ˈ)in-ˈsäl-yə-bəl
1
: impossible to solve
an insoluble problem
2
: impossible or difficult to dissolve
a substance insoluble in water
Medical Definition
insoluble
adjective
in·sol·u·ble
(ˈ)in-ˈsäl-yə-bəl
: incapable of being dissolved in a liquid
also
: soluble only with difficulty or to a slight degree
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