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 OpenAI wants its security boundaries to hold even when models actively attempt to defeat them. — Aamir Khollam, Interesting Engineering, 23 Oct. 2026 Today jeans are worn worldwide and valued not only for their durability and comfort but also for their ability to transcend boundaries of class, gender, age, and national identity. — Britannica Editors, Encyclopedia Britannica, 23 Oct. 2026 Maintaining healthy boundaries is a way of taking care of your closest relationships, but setting those boundaries with family can be hard. — Margaret Cirino, NPR, 23 Oct. 2026 The head tax is a growth killer, wherever it is applied within city boundaries. — The Editorial Board, Chicago Tribune, 22 Oct. 2026 See All Example Sentences for boundary

Recent Examples of Synonyms for boundary

Noun

There’s nothing off limits here, nothing too garish to clash with saxophone and strings.

— Kieran Press-Reynolds, Pitchfork, 26 Oct. 2026
Existing apartments also would not be subject to the rent limits until five years after they were built.

— Nathaniel Meyersohn, CNN Money, 25 Oct. 2026

Definition of limit

Noun

The southern tip of East Potomac Park, known as Hains Point, is beloved by cyclists, runners, picnickers and birders for its waterfront views, cherry trees and Ohio Drive, the scenic three-mile loop around its perimeter.

— Rachel Treisman, NPR, 23 Oct. 2026
Next, save 33% on the Tapo MagCam 2K+ (C425) Outdoor Security Camera, securing your perimeter with 100% wire-free magnetic installation and 300-day battery life.

— Juhi Wadia, PC Magazine, 22 Oct. 2026

Definition of perimeter

Noun

Because of this limitation, even the emergence of an antibiotic-resistant strain won’t necessarily spark a new pandemic, Wagner says, noting that such strains have already shown up in Madagascar.

— Faye Flam, Scientific American, 27 Oct. 2026
Hurun cross-checked its information with entrepreneurs, regulators, industry experts and others to compile the list, while acknowledging limitations.

— ABC News, ABC News, 27 Oct. 2026

Definition of limitation

Noun

It was approved by voters into the county charter in 2004 in an effort to preserve the area’s rural character and prevent high-density sprawl from stretching toward the Brevard County line.

— Martin E. Comas, The Orlando Sentinel, 29 Oct. 2026
Crossing county lines between Sonoma to the south and Mendocino to the north, this area is so little-known, even to locals, that marketing experts have saddled it with the moniker Mendonoma, in an effort to locate it in the cultural consciousness.

— Condé Nast, Condé Nast Traveler, 29 Oct. 2026

Definition of line

Noun

In their letter, the bishops attempted to balance human dignity and a right for governments to humanely protect borders.

— Andrew J. Campa, Los Angeles Times, 25 Oct. 2026
Meanwhile, North Korea has been adding mines, barbed wire fences, tactical roads, anti-tank walls and other fortifications to what's already one of the world's most heavily armed borders.

— Arkansas Online, Arkansas Online, 24 Oct. 2026

Definition of border

Noun

In the trial, participants experienced reductions in several cardiovascular risk factors, including systolic blood pressure, LDL cholesterol, systemic inflammation and neck circumference.

— Angelica Stabile, FOXNews.com, 28 Oct. 2026
Since radio waves travel at close to the speed of light, a signal could theoretically cover distances equivalent to the planet's circumference several times in a single second.

— Micah Hanks, Space.com, 27 Oct. 2026

Definition of circumference

Noun

Elastic edging keeps the machine-washable covers snug across a range of couch shapes, and the collection comes in several colors, weaves and textures to coordinate with most rooms.

— Lauren Jarvis-Gibson, Fort Worth Star-Telegram, 22 Oct. 2026
Blythe Copeland, writing for Martha Stewart, highlighted Nolan Interiors’ approach of sizing covers to individual seat, back or chaise cushions with elastic edging.

— Lauren Jarvis-Gibson, Miami Herald, 22 Oct. 2026

Definition of edging

Browse Nearby Words

boundaries

boundary

bounded

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“Boundary.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/boundary. Accessed 31 Oct. 2026.

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Synonyms of boundary

noun

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