Definitions for occupied
held or filled or in use
"she keeps her time well occupied"; "the wc is occupied"
seized and controlled as by military invasion
"the occupied countries of Europe"
resided in; having tenants
"not all the occupied (or tenanted) apartments were well kept up"
having ones attention or mind or energy engaged
"she keeps herself fully occupied with volunteer activities"; "deeply engaged in conversation"
Kernerman English Learner's Dictionary
(of a room or building) being used or lived in
The sign on the door said, "occupied."
busy doing sth
She's occupied with school work at the moment.; Try to keep yourself occupied.
(of a country or region) controlled by another country's military.
subjugated, under the control of a foreign military presence