"To or in the rear" refers to the back or behind of something. Synonyms for this phrase include "behind," "back," "posterior," "rearward," "hindmost," and "after." To describe an object or location that is positioned farther in the back, one might also use terms like "far back," "endmost," or "tail." Similarly, for a person or animal moving toward the back, one might use words like "retracing," "backtracking," "backpedaling," or "retreating." Overall, these synonyms can be useful for adding variety to one's writing or speech and providing more precise descriptions of location and movement.