preoccupied

/priˈɑk.jə.paɪd/
adjective
  1. Thinking about something so much that you do not notice or pay attention to other things.
    • He looked preoccupied during the meeting, staring out the window.
    • The child was preoccupied with building a tower and didn't hear his mother call.
    • She was so preoccupied with her phone that she missed her bus stop.
Antonyms
What does "preoccupied" mean? | whatsthatwordmean | whatsthatwordmean