1) Adjacent 2) Adjoining 3) Connected 4) Conterminous 5) Contiguous 6) Lying adjacent to 7) Neighboring 8) Sharing a border with Found on https://www.crosswordclues.com/clue/abutting
adjacentadjective having a common boundary or edge; touching; `abutting lots`; `adjoining rooms`; `Rhode Island has two bordering states; Massachusetts and Conncecticut`; `the side of Germany conterminous with France`; `Utah and the contiguous state of... Found on https://www.encyclo.co.uk/local/20974