occupant
n. countablen. a person who lives in a house or room, or someone who is inside a vehicle at a particular time.
n. a person who resides in or uses a specific space, such as a building, room, or vehicle.
The police asked the occupant of the car to step out.
The new apartment building is ready, but the first occupant will not move in until next month.
Emergency services must account for every occupant of the office block during a fire drill to ensure that the evacuation protocols are functioning effectively.
Borrowed from Middle French occupant (present participle of occuper) or Latin occupāns, occupantis (present participle of occupō). By surface analysis, occupy + -ant.
Often used in formal or official contexts, such as legal documents, insurance forms, or news reports.