adjoin
Americanverb (used with object)
-
to be close to or in contact with; abut on.
His property adjoins the lake.
-
to attach or append; affix.
verb (used without object)
verb
-
to be next to (an area of land, etc)
-
to join; affix or attach
Other Word Forms
Etymology
Origin of adjoin
1275–1325; Middle English a ( d ) joinen < Middle French ajoindre. See ad-, join
Explanation
Things that adjoin are next to each other or share a boundary. Two adjoining states are neighbors. The United States adjoins Canada. Just as the word join suggests togetherness, things that adjoin are together in a specific way. They're adjacent, which means they're butting right up against one other. Two adjoining buildings are connected or next-door neighbors. Two adjoining states share a border. If two rooms adjoin, they are connected by a door or they share a wall. When things adjoin, they have a physical connection.
Vocabulary lists containing adjoin
Close Encounters: Synonyms for "Near"
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The Dawes Act
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The Marrow Thieves
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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.
The witness was also asked by the lawyer about safety issues that could have arisen for local families whose back gardens adjoin the waste ground where the culvert is located.
From BBC • May 8, 2026
About 20% are protected nature areas, like the mountains covered with pine and fir forests that adjoin the neighboring state of Morelos.
From Seattle Times • Aug. 27, 2023
Land buyers will pay premium prices, depending upon a variety of circumstances, such as special financing, tax advantages, or a “once-in-a-lifetime” opportunity to purchase parcels that adjoin their farms or ranches.
From Washington Times • Dec. 12, 2016
Communities that adjoin the park are not endangered, and no evacuations have been ordered.
From Washington Post • Apr. 21, 2016
Sturdy red bricks adjoin pale stone accented by ornamental flourishes.
From "The Bletchley Riddle" by Ruta Sepetys and Steve Sheinkin
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
