say it: pree-AH-kyuh-pahyd
preoccupied is an adjective meaning "deeply absorbed in thought". It carries 2 recorded senses.
deeply absorbed in thought
“as distant and bemused as a professor listening to the prattling of his freshman class”
“lost in thought”
“a preoccupied frown”
having or showing excessive or compulsive concern with something
“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”
Definitions, synonyms and semantic relations for preoccupied come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.