Definitions

insurmountable

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

ADJECTIVE

impossible

Synonyms

STRONGEST

hopeless impassable impregnable invincible overwhelming unbeatable

WEAK

forget it inaccessible indomitable ineluctable insuperable no-win not a prayer unconquerable unmasterable

Antonyms

STRONGEST

beatable

WEAK

attainable defeatable possible surmountable

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.

There are still powerful ways to tell stories, even amid mergers and changes that seem insurmountable.

From Salon • May 1, 2026

Staring at the prospect of letting another seemingly insurmountable lead slip, Arsenal are desperate to banish those demons, having grappled with the tag over the past two decades.

From BBC • Apr. 13, 2026

L.A.’s Latino vote helped her leap from 2.5 percentage points behind the billionaire developer to an insurmountable double-digit lead.

From Los Angeles Times • Apr. 6, 2026

This was the closest thing that college basketball had to an insurmountable margin.

From The Wall Street Journal • Mar. 30, 2026

I don’t think it would have been a big deal then, but now it feels insurmountable.

From "Leah on the Offbeat" by Becky Albertalli

Vocabulary lists containing insurmountable

Power Suffix: -able

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The Awakening

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Be More Chill

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