BOUNDARIES Synonyms: 67 Similar and Opposite Words

boundaries

noun

plural of boundary

as in limits

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 perimeters

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 boundaries As Claudia, Curtis is perfectly biting and obnoxious, willing to insert herself into her ex-husband’s life for sport, stomping on his feeble boundaries. — Aramide Tinubu, Variety, 23 Oct. 2026 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 In the upstairs Sala Spiritello, Tommaso Cecca and his bar team push boundaries with creative cocktail pairings. — Jaclyn Degiorgio, Condé Nast Traveler, 22 Oct. 2026 The head tax is a growth killer, wherever it is applied within city boundaries. — The Editorial Board, Chicago Tribune, 22 Oct. 2026 Where those boundaries are for us is a very live conversation for musicians. — Lily Moayeri, SPIN, 21 Oct. 2026 For SpaceX, the near-term priority is reaching a high flight cadence for Starship and pushing the boundaries of vehicle reuse to enable it. — Eric Berger, ArsTechnica, 21 Oct. 2026

Recent Examples of Synonyms for boundaries

Noun

Some of the rooms are off-limits, but visitors will get to see Duke's extraordinary collection of Islamic art.

— Condé Nast, Condé Nast Traveler, 23 Oct. 2026
Flight imposes strict weight limits, so birds pack enormous numbers of very small neurons into very small brains.

— Jacek Krywko, ArsTechnica, 23 Oct. 2026

Definition of limits

Noun

Thursday’s action ramps up the pressure on the institutions, which were sent a document by the financial protection agency demanding data about their loans in Eaton and Palisades fire perimeters.

— Los Angeles Times, Los Angeles Times, 15 Oct. 2026
Outside their perimeters, vendors hawked noodles and cigarettes from makeshift stalls.

— Simone McCarthy, CNN Money, 13 Oct. 2026

Definition of perimeters

Noun

However, limitations in communication geometry can leave gaps in how missiles receive information from battlefield sensors.

— Aamir Khollam, Interesting Engineering, 21 Oct. 2026
For arrivals willing to submit to the experimental, ever-evolving social structure, and to the limitations that were placed on newcomers, the technologically superior Eiquans professed an indifference that amounted to a willing welcome.

— Jeff Spry, Space.com, 21 Oct. 2026

Definition of limitations

Noun

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
That protects state budgets but leaves businesses within their borders with less money to invest.

— Rick Lazio, Fortune, 24 Oct. 2026

Definition of borders

Noun

But a recent study found that people with larger waist circumferences who ate one avocado daily for six months did not see improvements in blood sugar, insulin levels, or insulin resistance.

— Abby Norman, Verywell Health, 30 June 2026
Its main beams are 27 inches long, with over 5-inch base circumferences.

— Bob McNally, Outdoor Life, 30 Oct. 2025

Definition of circumferences

Noun

Mahomes sprinted to his right to avoid pressure and, a split-second before falling out of bounds, heaved a pass that somehow hit Tyreek Hill in stride for 48 yards.

— Sam McDowell, Kansas City Star, 23 Oct. 2026
In industries like plumbing and construction, employees often carry company cards to buy fuel and supplies, while office staff sort through receipts to check that spending stays within bounds.

— Camila Grigera Naón, Fortune, 22 Oct. 2026

Definition of bounds

Browse Nearby Words

bound

boundaries

boundary

See all Nearby Words

Cite this Entry

Style

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

Copy Citation

Synonyms of boundaries

noun

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

milieu

Popular in Grammar & Usage

How to Use 'Who' vs. 'Whom'

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

'Affect' vs. 'Effect'

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

Why is '-ed' sometimes pronounced at the end of a word?

Popular in Wordplay

The Longest Long Words List

9 Words That Sound Like Insults But Aren't

12 Lovely and Unusual Words for the Natural World

Why do we 'bury the lede?'

'Za' and 9 Other Words to Help You Win at SCRABBLE

Popular

How to Use 'Who' vs. 'Whom'

The Longest Long Words List

9 Words That Sound Like Insults But Aren't

Games & Quizzes