Synonyms of boundary
1 frontierDictionary • Drug traffickers operate across national boundaries.
frontier • It wasn't difficult to cross the frontier.
edge • She was standing at the water's edge.
border • Clifford is enjoying life north of the border.
barrier • The demonstrators broke through the heavy police barriers.
margin • These islands are on the margins of human habitation.
brink • Their economy is teetering on the brink of collapse.
2 edges • the western boundary of the wood
perimeter • They walked round the perimeter of the stadium.
3 limitsDictionary • extending the boundaries of press freedom
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barrierA barrier is something such as a fence or wall that is put in place to prevent people from moving easily from one area to another.
• The demonstrators broke through the heavy police barriers.
borderThe border between two countries or regions is the dividing line between them. Sometimes the border also refers to the land close to this line.
• Clifford is enjoying life north of the border.
borderlineThe borderline between two different or opposite things is the division between them.
• the borderline between painting and photography
Thesaurus for boundary from the Collins English Thesaurus
something that indicates the farthest limit, as of an area; border