Synonyms for Occupied:

adj.

busy (adjective)
engaged, working.
inhabited; in use (adjective)
busy, populated, Rented, taken.

n.

action. busy (noun)
entertained, working.
full (noun)
Rented.
occupied (noun)
inhabited, tenanted, in use, busy, engaged, filled.

v.

captured (verb)
arrested, Snared, apprehended, Captured, abducted, Gained, Caught, Took, seized, Got, Collared, Achieved, secured, taken, Snatched, won, Gotten, Obtained.
inhabited (verb)
populated.
occupied (verb)
inhabited, colonized, Billeted, Lodged, Resided, Quartered, Roosted, Housed, Dwelled, Squatted, Stayed.

Other synonyms:

diverted
entertained.
leased
Rented.
Other relevant words:
entertained, Rented, busy, engaged, tenanted, filled, in use, working.

Usage examples for occupied

  1. Every one was occupied with his own thoughts. – In the Courts of Memory 1858-1875. by L. de Hegermann-Lindencrone
  2. The poor lady had died, it seemed, in the room which Mary now occupied probably in the same bed. – The Guests Of Hercules by C. N. Williamson and A. M. Williamson
  3. But Joan herself was occupied – The Turnstile by A. E. W. (Alfred Edward Woodley) Mason