The term "being contiguous to" suggests a close proximity or adjacency to something else. Antonyms for this phrase would include words that convey distance or separation, such as distant, remote, or far-off. Terms such as detached, disconnected, and isolated also describe a sense of being separate or distinct from a nearby object or location. "Being contiguous to" can imply a sense of connection or closeness, so antonyms might include words that convey a sense of detachment, such as aloof, disinterested, or uninvolved. Other antonyms might include words that convey a sense of difference, such as dissimilar or unrelated.