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

Relevance

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 These were actors who may have earlier been needling at or attempting to push my boundaries. — Todd Martens, Los Angeles Times, 18 Sep. 2026 Many have crossed a psychological boundary that will be extraordinarily difficult for any government to restore. — Pegah Banihashemi, Chicago Tribune, 18 Sep. 2026 If the system can read customer records, update a CRM or influence a regulated decision, identity controls, least-privilege access, audit logs and approval boundaries need to shape the architecture before the demo is approved. — Taras Tymoshchuk, Forbes.com, 18 Sep. 2026 Strong wind gusts may occur prior to any rain as the outflow boundary moves through. — Nc Weather Bot, Charlotte Observer, 18 Sep. 2026 See All Example Sentences for boundary

Recent Examples of Synonyms for boundary

Noun

If someone wants to split a cost, state your limit before agreeing.

— Tarot.com, Baltimore Sun, 7 Sep. 2026
The tropical cyclone reached Category 5, defined by sustained winds of 157 mph or greater, overnight Friday before losing some of its steam and settling into Category 4’s limits of sustained winds of 130 to 156 mph by Saturday.

— Dennis Romero, NBC news, 6 Sep. 2026

Definition of limit

Noun

Cal Fire officials at a Friday morning briefing said crews were making progress with hose lines along the fire’s perimeter ahead of the anticipated full opening of westbound I-80.

— Darrell Smith, Sacbee.com, 18 Sep. 2026
Officers were on the scene near the hospital and have established a perimeter in the area, according to the Miami Beach Police Department's Facebook page.

— Sergio Candido, CBS News, 17 Sep. 2026

Definition of perimeter

Noun

That experience has given us a close look at both the promise and the limitations of the Portuguese model.

— Karyn Sporer, The Conversation, 14 Sep. 2026
Risk officers, product managers and executives should understand AI capabilities, limitations and governance implications.

— Peter Smulovics, Forbes.com, 14 Sep. 2026

Definition of limitation

Noun

The Eagles were not as dominant in 2025, partly due to the regression of the depth in their secondary and the injuries sustained at edge rusher.

— Matt Schneidman, New York Times, 7 Sep. 2026
The facilities would include what’s known as an edge computing data center, which typically is much smaller than traditional data centers and which Global Stack says would require lower utility use and no municipal water connection.

— Justine McDaniel, Los Angeles Times, 6 Sep. 2026

Definition of edge

Noun

The new activity was separate from a border infrastructure project in the nearby Big Bend National Park, where the administration has suspended construction in an attempt to reach out to opponents.

— Rebecca Santana, Los Angeles Times, 19 Sep. 2026
On a map on the agency’s website where the agency posts updates of wall construction across the entire southern border, a photo showed a crane lifting one of the 30-foot-tall steel wall panels into place while construction workers looked on.

— Rebecca Santana, Fortune, 19 Sep. 2026

Definition of border

Noun

The village added a new kids category this year and honored Bryce Hansen, 3, who found two eastern cottonwood trees in his backyard with a trunk circumference of 156 inches, surpassing the village’s previous eastern cottonwood record of 138 inches.

— Michelle Mullins, Chicago Tribune, 10 Sep. 2026
All but one of the other circumference measurements were between 4 4⁄8 and 5 inches.

— Richard P. Smith, Outdoor Life, 27 Aug. 2026

Definition of circumference

Noun

After spending eight hours Sunday cutting, edging, shredding, digging and ripping at things in the yard and in the garage, my advice to younger readers is to invest in high-quality tools.

— Joe Kinsey OutKick, FOXNews.com, 24 Aug. 2026
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

Definition of edging

Browse Nearby Words

boundaries

boundary

bounded

See all Nearby Words

Cite this Entry

Style

“Boundary.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/boundary. Accessed 20 Sep. 2026.

Copy Citation

Synonyms of boundary

noun

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

volition

Popular in Grammar & Usage

Why do we use apostrophes to show possession?

Merriam-Webster’s Great Big List of Words You Love to Hate

The Exceptions of '-s' and '-es' Plurals

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Popular in Wordplay

9 Words That Sound Like Insults But Aren't

Back to School Vocabulary

Words from the 'Odyssey'

14 Phobias You Probably Haven't Heard Of

The Words of the Week - Sept. 18

Popular

Why do we use apostrophes to show possession?

9 Words That Sound Like Insults But Aren't

Back to School Vocabulary

Games & Quizzes