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

Airscope overcomes this limitation by delivering a large field of view in a design light enough for animals to wear freely.

— Mrigakshi Dixit, Interesting Engineering, 21 Oct. 2026
Meta insisted its recent operational incidents come from technical limitations rather than any partiality.

— ABC News, ABC News, 20 Oct. 2026

Definition of limitation

Noun

Trail currently is on death row and petitioned the state of Nebraska in August 2023 to set his execution date; Trail is 10th in line on death row for the state.

— Samantha Bergeson, Time, 22 Oct. 2026
The brother-sister duo hopes for the line to resonate with all kinds of people—including both fans and non-fans alike.

— Christian Allaire, Vogue, 21 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

Across both analyses, CagriSema was linked to reductions in abdominal fat, based on waist circumference, among women overall and across menopause stages, Novo added.

— Annika Kim Constantino, CNBC, 20 Oct. 2026
According to the National Institute of Diabetes and Digestive and Kidney Diseases, men with a waist circumference greater than 40 inches have a higher risk of developing health problems, including type 2 diabetes and heart disease.

— Melissa Rudy, FOXNews.com, 17 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

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boundaries

boundary

bounded

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Style

“Boundary.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/boundary. Accessed 27 Oct. 2026.

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Synonyms of boundary

noun

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