形容词

1. 全神贯注的；入神的
If you are preoccupied, you are thinking a lot about something or someone, and so you hardly notice other things.

1. having or showing excessive or compulsive concern with something

e.g. became more and more haunted by the stupid riddle
was absolutely obsessed with the girl
got no help from his wife who was preoccupied with the children
he was taken up in worry for the old woman

Synonym: hauntedobsessedtaken up(p)

2. deeply absorbed in thought

e.g. as distant and bemused as a professor listening to the prattling of his freshman class
lost in thought
a preoccupied frown

Synonym: bemuseddeep in thought(p)lost(p)