Insuperable and Open

Insuperable

Insuperable adjective - Incapable of being defeated, overcome, or subdued.
Usage example: the building project ran into insuperable financial difficulties and had to be scrapped

Open is an antonym for insuperable.

Nearby Words: insuperability, insuperably

Open

Open adjective - Allowing passage without obstruction.

Insuperable is an antonym for open.

Nearby Words: opening, openness, opened, opener
Cite this Source
Open and Insuperable. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/insuperable/open
Insuperable & Open. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/insuperable/open>.
Open or Insuperable. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/insuperable/open.
Google Ngram Viewer shows how "insuperable" and "open" have occurred on timeline