"Egressor" is a lesser-known term that is often used to describe someone who is leaving or exiting a place. However, if you find yourself seeking some variety in your vocabulary, there are other synonyms that can perfectly convey the same meaning. An alternative word for "egressor" could be "departee", which not only captures the act of leaving but also adds a touch of elegance to the situation. Another option is "exiter", a more straightforward synonym that effectively illustrates the act of departing. Lastly, one could use "leaver" as a crisp and concise word to describe an individual who is exiting a place.