This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. To be next to; be contiguous to: property that adjoins ours.

v. To attach: "I do adjoin a copy of the letter that I have received” ( John Fowles).

verb-intransitive. To be contiguous.

v. To be in contact or connection with.

v. To extend an algebraic object (e.g. a field, a ring, etc.) by adding to it (an element not belonging to it) and all finite power series of (the element).

v. To join or unite to; to lie contiguous to; to be in contact with; to attach; to append.

verb-intransitive. To lie or be next, or in contact; to be contiguous.

verb-intransitive. To join one's self.

To join on or add; unite; annex or append.

To be contiguous to or in contact with: as, his house adjoins the lake; a field adjoining the lawn.

To be contiguous; lie or be next, or in contact: with to: as, “a farm adjoining to the highway,” Blackstone. To approach; join.

v. lie adjacent to another or share a boundary

v. be in direct physical contact with; make contact

v. attach or add

"Abbey, and shew him the pastoral scenes that adjoin to it, the pure parent stream of Eden, and of Tweed, where Thomson first tuned his pastoral pipe, and I asked him to come to the Adelphi next day, to honour my sitting for the painting of my portrait."

adjoined    adjoining    adjoinning    adjoins   

add   

add   

adjunction   

stick    fret    hug    surround    adhere    button    march    cover    butt against    butt   

adjoined    adjoining   

attach    append    border    touchy   

Boyne    Burgoyne    coin    conjoin    enjoin    goin    groin    join    loin    purloin