The term "pre-visioned" means having a clear view of the future or having a plan in advance. Therefore, its antonym would indicate a lack of direction. One antonym could be "unplanned," suggesting a lack of premeditation or foresight. "Spontaneous" could also be an antonym, indicating a sudden or unplanned action. The opposite of "pre-visioned" could also be "unforeseeable," implying that the future is unpredictable and cannot be planned for. Other antonyms for "pre-visioned" might include "improvised," "rash," or "impulsive," indicating a lack of forethought, planning, or preparation.