BOUNDARY Synonyms: 65 Similar and Opposite Words

boundary

noun

ˈbau̇n-d(ə-)rē

Definition of boundary

as in limit

a real or imaginary point beyond which a person or thing cannot go parents have to set boundaries for their children, and the children want them to

Synonyms & Similar Words

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as in perimeter

the line or relatively narrow space that marks the outer limit of something that chalk line marks the boundary of our playing field

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of boundary Despite the ceasefire, Israel’s military has continued its almost daily attacks on the area, which is north of the Litani River and has been a de facto boundary in Lebanon, with large areas to the south under Israeli military control. — Bassem Mroue, Los Angeles Times, 15 Aug. 2026 Pisces February 19 – March 20 A loving boundary can make partnership feel more secure. — Tarot.com, New York Daily News, 14 Aug. 2026 In practice, the boundary between Louisiana Voodoo and Hoodoo was often blurred and their names used interchangeably. — Encyclopedia Britannica, 14 Aug. 2026 Mehidy brought up his 50 shortly before lunch off 117 balls, with five boundaries. — ABC News, 14 Aug. 2026 See All Example Sentences for boundary

Recent Examples of Synonyms for boundary

Noun

And officials who reach the rank of director-general and above generally have to live with permanent limits on their freedom to travel abroad, even after retirement.

— Sylvie Zhuang, CNN Money, 16 Aug. 2026
Later, the Moon opposes Saturn in your 1st House of Identity, asking whether an agreement still honors your own limits.

— Tarot.com, Sun Sentinel, 16 Aug. 2026

Definition of limit

Noun

The cougar was found lying on the sidewalk under the shade of a tree, where deputies set up a perimeter to keep vehicles and people away.

— Ruben Vives, Los Angeles Times, 14 Aug. 2026
This mix of modernity and tradition works well, both inside and out, where a stroll around the ground’s perimeter switches quickly from feeling gloriously old-school to being brought right up to date.

— Richard Sutcliffe, New York Times, 13 Aug. 2026

Definition of perimeter

Noun

That could address a major limitation facing today’s AI agents.

— Aamir Khollam, Interesting Engineering, 11 Aug. 2026
As played by Kate and Rooney Mara, in total sync, the driven, single-minded Jean and Joan become classic Herzogian outsiders, like Kaspar Hauser or Fitzcarraldo, daring to transcend the limitations of everyday living and language.

— Jill Goldsmith, Deadline, 11 Aug. 2026

Definition of limitation

Noun

In addition, Greg Rousseau and Bradley Chubb were the only edge-rushing outside linebackers on the field for the Bills’ first-team defense.

— Joe Buscaglia, New York Times, 16 Aug. 2026
And this year, the popular concept will be revisited in a new mid-top form, giving the shoe an even more boot-like edge.

— Riley Jones, Footwear News, 16 Aug. 2026

Definition of edge

Noun

Both the government and the Houthis have reported clashes and drone strikes along many parts of the frontlines, which stretch several hundred miles from the Red Sea coast to Yemen’s border with Oman.

— Charlotte Reck, CNN Money, 16 Aug. 2026
About 600 residents in nearby municipalities in Waimes and Bütgenbach, in Liège province near the German border, were told to evacuate Saturday as winds shifted and smoke spread through the area.

— ABC News, ABC News, 16 Aug. 2026

Definition of border

Noun

Because of these limitations, physicians usually consider waist circumference, body composition, fitness, blood pressure, blood sugar and cholesterol levels alongside BMI.

— Daryl Austin, USA Today, 13 Aug. 2026
Researchers looked at waist circumference and waist-to-hip ratio.

— ABC News, ABC News, 13 Aug. 2026

Definition of circumference

Noun

The great diversity of forms available lend themselves to foundation plantings, edging and low hedges, as well as architectural accents and reliable container plantings.

— Kim Toscano, Southern Living, 9 Aug. 2026
Contrast details like this blue velvet piping (Peacock from Pepper Home) outline the silhouette and emphasize the headboard's shape, while fringe, brush trim, scalloped edging, or decorative tape add an extra layer of personality.

— Lauren Bengtson, Better Homes & Gardens, 8 Aug. 2026

Definition of edging

Browse Nearby Words

boundaries

boundary

bounded

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Style

“Boundary.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/boundary. Accessed 19 Aug. 2026.

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Synonyms of boundary

noun

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