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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Example Sentences
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Recent Examples of insoluble
Most whole foods, like fruits, vegetables, and whole grains, contain a combination of insoluble and soluble fibers, but some are more concentrated in one than the other.
—
Jillian Kubala,
Health,
29 May 2026
Indeed, the only shooting victims shown (in several devastating flashes) are the heart of the film’s insoluble sorrows.
—
Ryan Lattanzio,
IndieWire,
25 May 2026
These small, furry fruits contain both soluble and insoluble fiber, which help draw water into the bowel (easing digestion and elimination) and add bulk for movement.
—
Morgan Fargo,
Vogue,
20 May 2026
By contrast, insoluble fiber won’t dissolve in water because that’s how words work.
—
Bruce Y. Lee,
Forbes.com,
3 May 2026
See All Example Sentences for insoluble
Jillian Kubala,
Health,
29 May 2026
Indeed, the only shooting victims shown (in several devastating flashes) are the heart of the film’s insoluble sorrows.
—
Ryan Lattanzio,
IndieWire,
25 May 2026
These small, furry fruits contain both soluble and insoluble fiber, which help draw water into the bowel (easing digestion and elimination) and add bulk for movement.
—
Morgan Fargo,
Vogue,
20 May 2026
By contrast, insoluble fiber won’t dissolve in water because that’s how words work.
—
Bruce Y. Lee,
Forbes.com,
3 May 2026
See All Example Sentences for insoluble
Recent Examples of Synonyms for insoluble
Adjective
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Your energy, self-confidence and competitive spirit are impossible to ignore, making this a powerful time for personal reinvention.
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On Thursday, the University of Kentucky announced a new $1 million prize to anyone able to decipher a complete scroll, a feat the researchers once considered impossible, by June next year.
Adjective
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The conflict feels contemporary without growing too cynical, and the core relationship stakes seem real without skewing hopeless.
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The situation of Palestinians in Gaza and the West Bank would almost certainly worsen and become more hopeless.
Cite this Entry
“Insoluble.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insoluble. Accessed 29 Jun. 2026.
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