231 entries under noun topic. ×

36
border(adjective, territory, break, part)
35
limit(close, area, part, end)
34
edge(adjective, part, end, mark)
23
margin(limit, edge, border)
22
bound(close, area, end, top)
22
end(break, close, top, limit)
20
frontier(territory, limit, edge)
19
perimeter(area, part, end, top)
17
periphery(area, part, end, top)
17
bounds(influence, limit, range, track)
17
fringe(adjective, limit, edge, trim)
16
verge(part, end, top, limit)
15
compass(area, influence, limit, scope)
14
pale(limit, outline)
14
circumference(area, end, influence, limit)
14
rim(part, top, limit, edge)
13
brink(area, limit, edge, trim)
13
extremity(end, top, limit, extreme)
13
line(mark, limit, stroke, border)
12
barrier(limit, edge, border, obstruction)
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APASmart Define. (2015). boundary thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/boundary/thesaurus/synonyms
ChicagoSmart Define. 2015. "boundary thesaurus" https://smartdefine.org/boundary/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, boundary thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/boundary/thesaurus/synonyms>.
MLASmart Define. "boundary thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/boundary/thesaurus/synonyms>