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

• hopeless
• impossible
• insoluble
• insolvable
• insuperable
• unattainable
• undoable
• unrealizable

Examples of unsolvable in a Sentence

an apparently unsolvable problem

Recent Examples on the Web

Her reputation for solving unsolvable crimes precedes her. —Nina Metz, Chicago Tribune, 20 Mar. 2025

The unparalleled potential of this emerging technology lies in its ability to solve problems that are currently unsolvable by even the most advanced supercomputers. —Guy Diedrich, Forbes, 24 Mar. 2025

Now a state-of-the-art forensic lab near Houston, Texas -- which is focused solely on partnering with law enforcement on cold case investigations -- is gaining attention for its ability to use powerful DNA testing technology to help crack seemingly unsolvable cases. —Paige Harriss, ABC News, 7 Mar. 2025

The world of mathematics is full of unreachable corners, where unsolvable problems live. —Joseph Howlett, WIRED, 9 Mar. 2025

Word History

First Known Use

circa 1775, in the meaning defined above

Rhymes for unsolvable

• solvable
• irresolvable
• unresolvable
• resolvable