Synonyms|796Antonyms|110|Broader|15Narrower|73Related|365

62 entries under noun topic. ×

2
frontier
2
hairline
2
heliopause
2
limit
2
lineation
2
lower bound
2
margin
2
mete
2
outer boundary
2
outline
2
perimeter
2
periphery
2
shoreline
2
surface
2
thalweg
2
threshold
2
upper bound
1
bound
1
boundary-line
1
confine
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APASmart Define. (2015). boundary thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/boundary/thesaurus/narrower
ChicagoSmart Define. 2015. "boundary thesaurus" https://smartdefine.org/boundary/thesaurus/narrower (accessed September 29, 2026).
HarvardSmart Define 2015, boundary thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/boundary/thesaurus/narrower>.
MLASmart Define. "boundary thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/boundary/thesaurus/narrower>