8
restriction(noun, area, limit, scope, range)
7
beginning(noun, limit, outline, border, borderline)
7
frame(noun, limit, outline, edge, bound)
7
horizon(noun, limit, outline, extent, border)
7
liminal
7
outpost(noun, limit, outline, border, station)
7
purlieus(noun, area, limit, scope, range)
7
radius(noun, area, influence, limit, scope)
7
skirt(noun, limit, outline)
7
threshold
7
tip(noun, end, top, point, limit)
6
boundary line(noun, expression, idiom)
6
bourn(noun, limit)
6
mete(noun, limit)
6
term(noun, close, end, top, point)
5
circumscription(noun, area, limit, scope, range)
5
coastal(adjective, edge)
5
cutoff(noun, limit)
5
delimitation
5
hem(noun, limit, outline, edge, trim)
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APASmart Define. (2015). boundary thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/boundary/thesaurus/synonyms
ChicagoSmart Define. 2015. "boundary thesaurus" https://smartdefine.org/boundary/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, boundary thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/boundary/thesaurus/synonyms>.
MLASmart Define. "boundary thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/boundary/thesaurus/synonyms>