Antonyms for the word "pre-occupying" are "disengaging," "detaching," and "distracting." These words represent the opposite of being preoccupied, which means being completely absorbed in one's thoughts, feelings, or actions. Disengaging refers to the act of disassociating oneself from something that was previously occupying one's mind. Detaching means experiencing a separation or disconnection from something that was previously causing preoccupation. Distracting refers to activities or stimuli that draw one's attention away from a preoccupation. Together, these three antonyms offer a range of ways to disengage from preoccupations, which can be helpful when trying to focus on other important matters.