Carrying over is a term used when one thing or activity continues into another period or time frame. Some antonyms for carrying over could include, "ending," "discontinuing," "ceasing," "terminating," or "finishing." Other antonyms could be "beginning anew," "starting fresh," "resetting," "restarting," or "commencing." Essentially, any word that describes a break or interruption in the continuity of an activity could be an antonym for carrying over. It all depends on the context of the situation and what is being carried over.