Antonyms for the phrase "being adjacent to" can be varying depending on the context. However, some opposing terms could be far away, distant, detached, separated, or apart from. It usually implies a physical location of two objects placed close to each other. To be far away means to be poles apart on the map, unrelated or not touching at all. Detached denotes a state of being separated or disconnected while separated means that the two objects are moved apart. The antonym apart from is to have some distance between two objects, significant enough not to be related or mutually influenced. Therefore, these words portray a vast difference from being adjacent to.