Insoluble(adjective)
Impossible to solve or explain; not able to be dissolved in a liquid. (??????? / ????????)
Synonyms: Unsolvable, Intractable, Unresolvable, Indissoluble
Antonyms: Solvable, Resolvable, Manageable, Soluble
Example: The committee faced an insoluble problem because no option satisfied all sides.
Trick to remember: In + soluble = not soluble; either it won’t dissolve in water, or it won’t dissolve as a problem because no solution exists.
Learn it with 19 more words: Daily Vocabulary – 21 December 2025 →
