absorbed in thought; having one's mind occupied by something

चिंतित

English Usage: She seemed preoccupied with her work and hardly noticed anyone around her.

Hindi Usage: वह अपने काम में इतनी चिंतित थी कि उसने आसपास के किसी को hardly देखा।

to engage or absorb someone's attention completely

किसी का ध्यान पूरी तरह से लेना

English Usage: The complex problem preoccupied the team for hours.

Hindi Usage: जटिल समस्या ने टीम को घंटों तक पूरी तरह से व्यस्त रखा।