insoluble

adjective

(ˌ)in-ˈsäl-yə-bəl How to pronounce insoluble (audio)
Definition of insolublenext
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

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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 Apples also contain multiple types of fiber, including soluble fiber (which promotes healthy cholesterol levels) and insoluble fiber (which benefits digestion), says Elick. — Kirsten Nunez, Martha Stewart, 31 Aug. 2026 Both minerals bind together in the digestive tract to form insoluble calcium oxalate, which naturally prevents the body from absorbing essential calcium. — Ayesha Gulzar, Verywell Health, 18 Aug. 2026 Fiber, including both soluble and insoluble fiber, play critical roles in gut health. — Jillian Kubala, HEALTH, 4 Aug. 2026 Many popular houseplants contain insoluble calcium oxalate crystals, tiny needle-like structures found in their leaves and stems. — Ryan Brennan, Fort Worth Star-Telegram, 14 July 2026 See All Example Sentences for insoluble
Recent Examples of Synonyms for insoluble
  1. impossible
  2. hopeless
Adjective
  • Elwood told his boss – Peter Brown, a former member of the Beatles’ inner circle and the founder of Brown Lloyd James – that the assignment was impossible.
    — Rob Picheta, CNN Money, 30 Aug. 2026
  • Such components can benefit from additive manufacturing because the technology lets engineers create geometries that would be difficult or impossible to produce with traditional manufacturing methods.
    — Kaif Shaikh, Interesting Engineering, 29 Aug. 2026
Definition of impossible
Adjective
  • Corruption was endemic, and the country’s deeper troubles—its poverty, its social inequities, and the hopeless conditions that drive millions of Nepalis to emigrate for work—endured, laying the kindling for last year’s explosion.
    — Ishaan Tharoor, New Yorker, 29 Aug. 2026
  • Sometimes, love in a hopeless place is worth the price of admission.
    — Abbey Mastracco, New York Daily News, 28 Aug. 2026
Definition of hopeless

Browse Nearby Words

insolents
insoluble
insolvable
See all Nearby Words

Cite this Entry

“Insoluble.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insoluble. Accessed 5 Sep. 2026.

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