adjoining

adj.

Neighboring; contiguous.

Contiguous; attaching; sharing a common border, as in adjoining properties.

contiguous; attaching; sharing a common border.
Example: A warehouse with adjoining office space.

adjective

Sharing a common boundary: adjacent, conterminous, contiguous, next. See near/far/distance.

adj

Definition: being next to
Antonyms: detached, divided, separate

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IN BRIEF: To be next to, side by side.

People in the adjoining rooms all heard the children's song.