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
Prunes offer both soluble and insoluble fiber, proving especially helpful for the regularity challenges that often come with GLP-1s.
—
Lauren Manaker, SELF, 10 Mar. 2026
Shawn and Gregory have been grappling with the insoluble problem of just how much of one’s life one can or even should be fully alive to for half a century.
—Sara Holdren, Vulture, 6 Mar. 2026
Why Fiberlayering Is Better Than Fibermaxxing Fiber is often grouped as soluble, insoluble, and resistant starch.
—Kathleen Ferraro, Verywell Health, 5 Mar. 2026
Constipation and Digestion Issues There are two types of fiber, soluble and insoluble, and both play important roles in regular bowel movements, says Laurie Allen, RDN, LDN, professor of nutrition and director of didactic program in dietetics nutrition at UNC Greensboro.
—Kirsten Nunez, Martha Stewart, 25 Feb. 2026
See All Example Sentences for insoluble
Lauren Manaker, SELF, 10 Mar. 2026
Shawn and Gregory have been grappling with the insoluble problem of just how much of one’s life one can or even should be fully alive to for half a century.
—Sara Holdren, Vulture, 6 Mar. 2026
Why Fiberlayering Is Better Than Fibermaxxing Fiber is often grouped as soluble, insoluble, and resistant starch.
—Kathleen Ferraro, Verywell Health, 5 Mar. 2026
Constipation and Digestion Issues There are two types of fiber, soluble and insoluble, and both play important roles in regular bowel movements, says Laurie Allen, RDN, LDN, professor of nutrition and director of didactic program in dietetics nutrition at UNC Greensboro.
—Kirsten Nunez, Martha Stewart, 25 Feb. 2026
See All Example Sentences for insoluble
Recent Examples of Synonyms for insoluble
Adjective
-
So heavy, in fact, that the Magic crumbled underneath the weight and the tone of the series has changed, and the reasons are impossible to ignore.—
Mike Bianchi,
The Orlando Sentinel,
2 May 2026
-
April 20 – May 20 A turning point in your relationships becomes impossible to ignore.—
Tarot.com,
New York Daily News,
1 May 2026
Adjective
-
Kay seems to be more of a relentless romantic than a hopeless one.—
Larisha Paul,
Rolling Stone,
28 Apr. 2026
-
The Swiss Eugen Bleuler, a follower of Kraepelin, replaced the term dementia praecox, which implied hopeless deterioration, with the softer term schizophrenia.—
Literary Hub,
Literary Hub,
28 Apr. 2026
Cite this Entry
“Insoluble.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insoluble. Accessed 2 May. 2026.
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