unsolvable

adjective

un·​solv·​able ˌən-ˈsäl-və-bəl 

-ˈsȯl-

: not able to be explained, answered for, or solved : not solvable

unsolvable disputes

an unsolvable mystery

unsolvably

ˌən-ˈsäl-və-blē 

-ˈsȯl-

adverb

an unsolvably difficult problem

Synonyms of unsolvable

• impossible
• hopeless

Examples of unsolvable in a Sentence

an apparently unsolvable problem

Recent Examples on the Web

The details of the case were so puzzling as to be almost unbelievable, certainly unsolvable. — Steve Belanger, HollywoodReporter, 16 Sep. 2026

Not that the complexity has put people off trying to solve the unsolvable. — Conor O'Neill, New York Times, 26 Aug. 2026

Zelenskyy fired Fedorov in mid-July, citing an unsolvable feud between him and Zelenskyy's top general, Oleksandr Syrskyi. — Duarte Dias, CBS News, 23 Aug. 2026

Some of them will be only ameliorated or policed; others might be unsolvable in principle. — Joshua Rothman, New Yorker, 1 Aug. 2026

Word History

First Known Use

circa 1775, in the meaning defined above

Rhymes for unsolvable

• solvable
• irresolvable
• unresolvable
• resolvable