boundary

[boun-duh-ree, -dree] / ˈbaʊn də ri, -dri /

NOUN

outer limit

Synonyms

STRONGEST

barrier border borderline bounds confines edge frontier horizon line perimeter

STRONG

ambit beginning borderland brink circumference circumscription compass end environs extent extremity frame fringe hem limits march margin mark mere mete outline outpost pale periphery precinct purlieus radius rim side skirt terminal termination terminus verge

WEAK

abuttals line of demarcation

Antonyms

STRONGEST

center inside interior middle

STRONG

opening start

WEAK

minimum

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In Rhode Island, a case has been ongoing for three years over a law that moved the boundary of a public beach further inland.

From The Wall Street Journal • Jun. 9, 2026

While South Wales Police was responsible for the original investigation and storage of the evidence tape, a boundary change in 1996 saw Gwent Police assume responsibility for Caerphilly, and Michaela's case.

From BBC • May 23, 2026

The boundary at which gaming ends and AI begins has always been blurry.

From MarketWatch • May 23, 2026

The road is a main thoroughfare and marks an unofficial east-west boundary for the unincorporated town of Altadena.

From Los Angeles Times • May 19, 2026

They heard uproar from the distant boundary of the school as what sounded like hundreds of people came swarming over the out-of-sight walls and pelted toward the castle, uttering loud war cries.

From "Harry Potter and the Deathly Hallows" by J.K. Rowling

Vocabulary lists containing boundary

Human Geography - Middle School

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Human Geography - High School

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Political Geography - Middle School

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