The phrase "are adjacent to" refers to the proximity of two or more objects or locations. The antonyms of this phrase can be "are far from," "are distant from," "are apart from," or "are separated from." These antonyms indicate the opposite of proximity or closeness. When two objects or locations are far from each other, they cannot be considered as adjacent. Similarly, when they are at a considerable distance or are separated from each other, they cannot be considered adjacent. Understanding the antonyms of "are adjacent to" is essential to use the term appropriately in different contexts.