54 entries under noun topic. ×
| barrier(border, borderline) | |
| delimitation | |
| march(territory, edge, border, borderline) | |
| terminus(limit, edge, border, borderline) | |
| verge(limit, edge, border, borderline) | |
| circumscription | |
| division | |
| mark | |
| mete | |
| precinct | |
| border line | |
| boundary line | |
| brink(area, limit, edge, border) | |
| confines(border, borderline) | |
| extreme(limit, edge, boundary) | |
| front line | |
| marchland(territory, edge, borderline) | |
| outpost(border, station, borderline) | |
| perimeter(border, borderline, verge, threshold) | |
| periphery(border, borderline, verge, threshold) |
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| APA | Smart Define. (2015). frontier thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/frontier/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "frontier thesaurus" https://smartdefine.org/frontier/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, frontier thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/frontier/thesaurus/synonyms>. |
| MLA | Smart Define. "frontier thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/frontier/thesaurus/synonyms> |