Pre-occupy refers to being engrossed in something or having one's attention primarily focused on a particular task or activity. Antonyms for pre-occupy include disengage, free, and unburden. Disengage means to detach oneself from something or to release oneself from a situation. Free means to release oneself from constraints or limitations. Unburden means to unload oneself from a heavy load or to get rid of a burden. Other antonyms for pre-occupy include distract, divert and occupy, which means to divert or redirect one's attention from something that was previously being focused upon. Thus, antonyms for pre-occupy suggest a state of being unburdened or unfocused, often resulting in greater relaxation and mental clarity.