| verb | engage or engross the interest or attention of beforehand or occupy urgently or obsessively “His work preoccupies him” |
| verb | occupy or take possession of beforehand or before another or appropriate for use in advance “the army preoccupied the hills” |
| adjective | deeply absorbed in thought “as distant and bemused as a professor listening to the prattling of his freshman class” |
| adjective | having or showing excessive or compulsive concern with something “became more and more haunted by the stupid riddle” |
| preoccupation | noun | an idea that preoccupies the mind and holds the attention |
| preoccupancy | noun | the mental state of being preoccupied by something |