Boundary
Boundary noun - The line or relatively narrow space that marks the outer limit of something.
Usage example: that chalk line marks the boundary of our playing field
Borderline is a synonym for boundary in border topic. In some cases you can use "Borderline" instead the word "Boundary" as a noun or an adjective, when it comes to topics like dividing line, outer limit. popular alternative
Nearby Word: bound
Borderline
Borderline noun - The line or relatively narrow space that marks the outer limit of something.
Usage example: the actual borderline separating the two properties is now being disputed
Boundary is a synonym for borderline in border topic. You can use "Boundary" instead the word "Borderline" as a noun or an adjective, if it concerns topics such as threshold, dividing line. popular alternative
Nearby Words: border, borderland
Mutual synonyms
How words are described
| major | major boundary | major borderline |
Cite this Source
Borderline and Boundary. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/boundary/borderline
Boundary & Borderline. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/boundary/borderline>.
Borderline or Boundary. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/boundary/borderline.
Google Ngram Viewer shows how "boundary" and "borderline" have occurred on timeline