The phrase "sets foot in" refers to the action of entering a place, location, or premise. Its antonyms are "exits," "leaves," "departs," "retreats," and "escapes." These antonyms refer to the opposite action of leaving a place or location. They are often used to describe situations where someone is leaving a place he or she does not want to be, or a situation that is undesirable. Using antonyms for "sets foot in" can be valuable in writing and speaking, especially when creating contrast and expressing different emotions, such as relief, frustration, or disappointment.