preoccupied
UK: priːˈɒkjʊpaɪd | US: priˈɑːkjəpaɪd
adj. 1. (of a person) absorbed in thought; distracted.
adj. 2. (of a space or resource) already taken or in use.
The word "preoccupied" combines the Latin prefix "pre-" (meaning "before") with the verb "occupy" (from Latin "occupare," meaning "to seize or take control"). The suffix "-ed" turns it into an adjective. Originally used in the 16th century to describe physical possession (e.g., land), it later evolved to describe mental absorption or prior engagement. The logic reflects a metaphorical extension from physical to mental "occupation."
She was too preoccupied with her work to notice the time.
The parking spot was already preoccupied by another car.
His preoccupied expression suggested he was deep in thought.
Don’t approach him when he’s preoccupied with a problem.
The meeting room is preoccupied until 3 PM.