occupied

1. Engaged; in use; being used by a person and not free for use by someone else; as, the wc is occupied. Opposite of free, available, and unoccupied.
2. Inhabited, lived-in, tenanted; having residents; -- of dwelling units.
3. Overrun, taken over; -- of countries or territories; as, occupied France. Opposite of unoccupied.
4. Busy; actively or fully engaged in some activity; -- of people. Opposite of idle.