as in impossible
incapable of being solved or accomplished
the seemingly insoluble mystery concerning the identity of the people who built these ancient structures
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of insoluble
Meanwhile, insoluble fiber bulks up your stool and keeps you regular, Schiff says.
—
Kirsten Nunez, Martha Stewart, 30 Dec. 2025
Brown rice contains more insoluble fiber from the bran layer, which can be great for promoting regular bowel movements and supporting overall gut health.
—Lauren Panoff, Verywell Health, 9 Dec. 2025
There are two main kinds of fiber—insoluble and soluble fiber.
—Mark Gurarie, Health, 5 Dec. 2025
There are two main types of dietary fiber—soluble and insoluble—and many foods contain a combo of the two.
—Danielle Zickl, SELF, 27 Nov. 2025
See All Example Sentences for insoluble
Kirsten Nunez, Martha Stewart, 30 Dec. 2025
Brown rice contains more insoluble fiber from the bran layer, which can be great for promoting regular bowel movements and supporting overall gut health.
—Lauren Panoff, Verywell Health, 9 Dec. 2025
There are two main kinds of fiber—insoluble and soluble fiber.
—Mark Gurarie, Health, 5 Dec. 2025
There are two main types of dietary fiber—soluble and insoluble—and many foods contain a combo of the two.
—Danielle Zickl, SELF, 27 Nov. 2025
See All Example Sentences for insoluble
Recent Examples of Synonyms for insoluble
Adjective
-
While Houston’s rally wasn’t quite as explosive, the Texans pulled off what once seemed impossible.—
Scott Thompson,
FOXNews.com,
10 Nov. 2025
-
There are great catches and there are impossible catches.—
The Athletic College Football Staff,
New York Times,
9 Nov. 2025
Adjective
-
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
-
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 9 Jan. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share