Synonyms for Preoccupied:

adj.

absorbed (adjective)
deep in thought.
compulsive (adjective)
compulsive, addicted, fixated, fanatic, obsessive.
engaged (adjective)
deep.
faraway (adjective)
distant.
immersed (adjective)
taken up.

n.

deep, awareness, rapt, excite, intent. ability, distrait. distracted (noun)
rapt, study at absent-minded, engrossed.

Other synonyms:

distrait, spaced-out, distant. deep. engrossed
rapt.

Usage examples for preoccupied

  1. Max was in one of his preoccupied moods, and scarcely addressed a word to anyone. – The Keeper of the Door by Ethel M. Dell
  2. They are the faces of important people, cheerful people, pleasantly preoccupied with the business in hand. – A Journal of Impressions in Belgium by May Sinclair
  3. As for Milly, the Countess really loved her as well as the preoccupied state of her affections would allow. – Scenes of Clerical Life by George Eliot