39 entries under borderline topic. ×
| border(noun, territory, limit, edge) | |
| extremity(noun, limit, edge, border) | |
| bounds(noun, limit, border) | |
| barrier(noun, border) | |
| march(noun, territory, edge, border) | |
| terminus(noun, limit, edge, border) | |
| threshold | |
| verge(noun, limit, edge, border) | |
| brink(noun, area, limit, edge, border) | |
| confines(noun, border) | |
| limits | |
| marchland(noun, territory, edge) | |
| outpost(noun, border, station) | |
| perimeter(noun, border, verge, threshold) | |
| periphery(noun, border, verge, threshold) | |
| termination(noun, limit, edge, border) | |
| line of demarcation(expression, idiom, border) | |
| ambit(noun, border) | |
| extent(noun, border) | |
| fringe(limit, edge, border, boundary) |
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| APA | Smart Define. (2015). frontier thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/frontier/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "frontier thesaurus" https://smartdefine.org/frontier/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, frontier thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/frontier/thesaurus/synonyms>. |
| MLA | Smart Define. "frontier thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/frontier/thesaurus/synonyms> |