very close; either touching or almost touching
"had adjacent rooms"
"in the next room"
"the person sitting next to me"
"our rooms were side by side"
"Rhode Island has two bordering states; Massachusetts and Conncecticut"
"the side of Germany conterminous with France"
"Utah and the contiguous state of Idaho"
"neighboring cities"
"lands adjacent to the mountains"
"New York and adjacent cities"