preoccupied

Definitions

Lost in thought and unaware of one's immediate surroundings.

Already occupied or engaged by something else.

Examples

She seemed preoccupied with her thoughts and didn't notice when I walked into the room.

He was so preoccupied with his work that he completely forgot about our dinner plans.

Synonyms

engrossed absorbed distracted immersed intent wrapped up lost in thought

Antonyms

unconcerned indifferent inattentive unaware oblivious distracted carefree