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Synonyms

insurmountable

American  
[in-ser-maun-tuh-buhl] / ˌɪn sərˈmaʊn tə bəl /

adjective

  1. incapable of being surmounted, passed over, or overcome; insuperable.

    an insurmountable obstacle.


insurmountable British  
/ ˌɪnsəˈmaʊntəbəl /

adjective

  1. incapable of being overcome; insuperable

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms


Etymology

Origin of insurmountable

First recorded in 1690–1700; in- 3 + surmountable ( def. )


Explanation

The adjective insurmountable describes some barrier that is incapable of being overcome. The Great Wall of China was meant to be an insurmountable deterrent to would-be invaders. Although the adjective insurmountable can be used to describe an actual physical barrier, it most often refers to a less tangible challenge. "The runner was disheartened because her competitor had an insurmountable lead in the race." "Because of insurmountable difficulties, the school's fall party had to be canceled. The water heater burst, raining gallons of water down on the gym, and flooding it. Since it was not a swimming party, the school wasn't able to clean up the mess in time to host the party."

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Vocabulary lists containing insurmountable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

In a family that is very “English,” not big on touch and emotive language, this presents potentially insurmountable awkwardness.

From The Wall Street Journal ● Oct. 2, 2026

As the film progresses, Herzog intimately considers humanity’s relationship to the insurmountable.

From Salon ● Sep. 28, 2026

It remains their Holy Grail – but if Odegaard maintains his brilliant form then their chances of crossing a so far insurmountable barrier will increase hugely.

From BBC ● Sep. 9, 2026

Publishing his outlook for the remainder of the year on Tuesday, JPMorgan’s strategist Mislav Matejka also finds that “we do not expect rising bond yields to present an insurmountable obstacle for stocks.”

From MarketWatch ● Sep. 1, 2026

“An almost insurmountable handicap for the Huskies,” declared the New York Sun’s Malcolm Roy.

From "The Boys in the Boat: Nine Americans and Their Epic Quest for Gold at the 1936 Berlin Olympics" by Daniel James Brown

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