Absorbed in some thought or Excessively concerned with something
Rachena is really preoccupied, I think she’s having some family problems.
Oh! Were you talking to me honey ? I’m sorry; I’m just preoccupied with work.
John was so preoccupied with his deadline, that he forgot to attend his cousin’s wedding.
ラブ・ストーリーは突然に / 小田 和正（ピアノ plus）