50 entries under borderline topic. ×

2
circumscription(noun, area, line, limit, scope)
2
environs(noun, area, line, limit, scope)
2
frontier(noun, border, verge, threshold)
2
outpost(border, frontier)
2
purlieus(noun, area, line, limit, scope)
1
end(edge, border, frontier, lip)
1
extent(noun, area, line, limit, scope)
1
horizon(ring, border, loop, frontier)
1
line(noun, track, edge, trail, border)
1
march(edge, border, frontier, trimming)
0
precinct(noun, area, line, limit, scope)
0
radius(noun, area, line, limit, scope)
0
abuttals(border, frontier)
0
barrier(border, frontier)
0
beginning(border, frontier)
0
boundary frontier(expression, frontier)
0
door
0
entrance
0
line of demarcation(expression, idiom, border, frontier)
0
marchland
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APASmart Define. (2015). perimeter thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/perimeter/thesaurus/synonyms
ChicagoSmart Define. 2015. "perimeter thesaurus" https://smartdefine.org/perimeter/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, perimeter thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/perimeter/thesaurus/synonyms>.
MLASmart Define. "perimeter thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/perimeter/thesaurus/synonyms>