departer
nounUK /dɪˈpɑːtə/
US /dɪˈpɑːrtər/
A departer is someone who leaves a place.
The last departer from the party turned off the lights.
OTHER MEANINGS
2. A person who dies; one who departs from life.
The old sailor was mourned as a peaceful departer.
3. A person who abandons or deviates from a course, belief, or custom.
He was seen as a departer from the family's traditions.
4. A train or vehicle that is scheduled to leave.
The station board listed the departer for platform three.