Insurmountable
Insurmountable adjective - Incapable of being defeated, overcome, or subdued.
Usage example: the familiar story of the underdog who ultimately triumphs despite insurmountable odds
Open is an antonym for insurmountable.
Nearby Word: insurmountability
Open
Both words in one sentence
- This is mostly academic speculation, however - the insurmountable physical differences involved mean that her open-mindedness is never put to the test.
Source: Literature / The Jenkinsverse -
The map is surrounded by the aforementioned Insurmountable Waist High Fence, except for one open area (marked with a skull-and-crossbones sign) that leads into a rice paddy.
Source: Border Patrol
Cite this Source
Open and Insurmountable. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/insurmountable/open
Insurmountable & Open. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/insurmountable/open>.
Open or Insurmountable. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/insurmountable/open.
Google Ngram Viewer shows how "insurmountable" and "open" have occurred on timeline