Yes, occupy is a Scrabble word!

Verb

1. Keep busy with

2. Live (in a certain place)

3. Occupy the whole of

4. Be on the mind of

5. March aggressively into another's territory by military force for the purposes of conquest and occupation

6. Require (time or space)

7. Consume all of one's attention or time

8. Assume, as of positions or roles