adjoin

verb

ad·​join ə-ˈjȯin 

a-

adjoined; adjoining; adjoins

transitive verb

1

: to add or attach by joining

2

: to lie next to or in contact with

intransitive verb

: to be close to or in contact with one another

Synonyms

• join
• flank
• surround
• neighbor
• touch

Examples of adjoin in a Sentence

Her office adjoins the library.

The two rooms adjoin each other.

Recent Examples on the Web

George and Amal Clooney The couple first held a symbolic wedding at the seven-star Aman Canal Grande Hotel, followed by a civil ceremony at the 16th-century Palazzo Cavalli adjoining the Ca' Farsetti, the Venice town hall where civil weddings routinely take place. —Anna Kaufman, USA Today, 25 June 2025

Photo : Gregory White/Seattle Home Photography An adjoining sunroom serves as a less formal spot to have a meal. —Demetrius Simms, Robb Report, 1 May 2025

The facility adjoined a maternity hospital where Catholic women pregnant out of wedlock would deliver babies. —Bob Goldsborough, Chicago Tribune, 22 June 2025

Joint Base Myer-Henderson Hall adjoins Arlington National Cemetery. —Tom Vanden Brook, USA Today, 27 May 2025

Word History

Etymology

Middle English ajoynen, adjoynen, borrowed from Anglo-French ajoindre, going back to Latin adjungere "to link up, yoke, add, attach," from ad- ad- + jungere "to join entry 1"

First Known Use

14th century, in the meaning defined at transitive sense 1

Rhymes for adjoin

• benzoin
• bitcoin
• conjoin
• enjoin
• fibroin
• rejoin
• sirloin
• subjoin
• coin
• coyne
• groin
• join

Kids Definition

adjoin

verb

ad·​join ə-ˈjȯin 

a-

1

: to add or attach by joining

2

: to lie next to or in contact with