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
Flax is known to promote good digestive health and prevent constipation, thanks to plenty of insoluble fiber and soluble fiber (both of which facilitate digestion and regular bowel movements through slightly different means).
—
Christina Chaey, Bon Appetit Magazine, 30 Sep. 2025
Questions the younger Kant had answered glibly were now declared insoluble.
—Shai Tubali, Big Think, 30 Sep. 2025
There are two types of dietary fiber: soluble and insoluble.
—Jacqueline Howard, CNN Money, 12 Sep. 2025
Whole foods rich in both soluble and insoluble fiber include oats, prunes, kiwis, legumes, leafy vegetables, pears and whole grains.
—Daryl Austin, USA Today, 6 Sep. 2025
See All Example Sentences for insoluble
Christina Chaey, Bon Appetit Magazine, 30 Sep. 2025
Questions the younger Kant had answered glibly were now declared insoluble.
—Shai Tubali, Big Think, 30 Sep. 2025
There are two types of dietary fiber: soluble and insoluble.
—Jacqueline Howard, CNN Money, 12 Sep. 2025
Whole foods rich in both soluble and insoluble fiber include oats, prunes, kiwis, legumes, leafy vegetables, pears and whole grains.
—Daryl Austin, USA Today, 6 Sep. 2025
See All Example Sentences for insoluble
Recent Examples of Synonyms for insoluble
Adjective
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While Houston’s rally wasn’t quite as explosive, the Texans pulled off what once seemed impossible.—
Scott Thompson,
FOXNews.com,
10 Nov. 2025
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There are great catches and there are impossible catches.—
The Athletic College Football Staff,
New York Times,
9 Nov. 2025
Adjective
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Things take a turn for the whimsical when, with the help of some lightning — and later, Taffy’s tanning bed — Lisa finds a companion in an undead, Victorian-era Cole Sprouse, a hopeless romantic who communicates exclusively in grunts, and whose devotion to Lisa knows no bounds.—
Bailey Richards,
PEOPLE,
31 Oct. 2025
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The Jets are hopeless, with head coach Aaron Glenn pushing back on reporters weekly and owner Woody Johnson tossing his $40 million quarterback, Justin Fields, under the bus after another rough outing.—
Luca Evans,
Denver Post,
25 Oct. 2025
Cite this Entry
“Insoluble.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insoluble. Accessed 15 Nov. 2025.
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