| confinement | |
| course(range, track, period, trail, interval) | |
| divider(noun, break, split, disagreement, class) | |
| floor | |
| last(limit, edge) | |
| lip(noun, edge, bound, border, surplus) | |
| marchland(noun, territory, edge, borderline, frontier) | |
| mere(noun, limit, border, borderline, frontier) | |
| nib(noun, top, point, limit, extreme) | |
| obstacle(noun, privet, hedgerow) | |
| outside(limit, edge, margin, sideline) | |
| partition(split, class, distinction, section, borderline) | |
| point(noun, end, top, line, limit) | |
| pole(limit, edge) | |
| rail | |
| restrain | |
| skirting | |
| spread | |
| stint(noun, limit) | |
| stop |
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| APA | Smart Define. (2015). boundary thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/boundary/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "boundary thesaurus" https://smartdefine.org/boundary/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, boundary thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/boundary/thesaurus/synonyms>. |
| MLA | Smart Define. "boundary thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/boundary/thesaurus/synonyms> |