Frontier
Frontier adjective - Located at or near a border.
Usage example: a frontier town with a reputation for vice and lawlessness
Outermost and frontier are semantically related. In some cases you can use "Outermost" instead an adjective "Frontier".
Nearby Word: frontiersman
Outermost
Cite this Source
Outermost and Frontier. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/frontier/outermost
Frontier & Outermost. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/frontier/outermost>.
Outermost or Frontier. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/frontier/outermost.
Google Ngram Viewer shows how "frontier" and "outermost" have occurred on timeline