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

• abut
• border (on)
• butt (on or against)
• flank
• fringe
• join
• march (with)
• neighbor
• skirt
• touch
• verge (on)

Examples of adjoin in a Sentence

Her office adjoins the library.

The two rooms adjoin each other.

Recent Examples on the Web

Those who call for defending democracy and freedom in the states adjoining Russia must be realistic about the consequences of trying to do so. —Rajan Menon, Foreign Affairs, 29 Feb. 2016

The state’s southeast, adjoining West Virginia, is considered the foothills of this mountain region. —Matthew Smith, The Conversation, 24 July 2024

For now, the penguin sits on a bench, looking out a window; and the polar bear rests by the entrance of the roomy adjoining bathroom. —Lennie Omalza, The Courier-Journal, 18 July 2024

Authorities searched for Pope for two days until his body was recovered July 14 from the Mississippi River in adjoining Wright County, according to the sheriff. —Mike Stunson, Kansas City Star, 15 July 2024

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

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