Preoccupied is a word that means to be fully engaged or absorbed in something, often to the exclusion of other things. Synonyms for preoccupied include preoccupied, engrossed, absorbed, immersed, lost, rapt, captivated, carried away, distracted, entranced, fascinated, fixed, focused, gripped, hypnotized, involved, mesmerized, occupied, obsessed, pinned, possessed, taken over, wrapped up, and consumed. These words can be used interchangeably depending on the context and tone of the message being conveyed. Overall, it is important to choose the right synonym to clearly express what you mean and avoid confusion.