The antonyms for "crosses out" are "writes in," "adds," and "inserts." While crossing out represents the action of removing or deleting something, writing in and adding describe the act of including or introducing new information. Writing in means including details that were not previously present, while adding represents supplementing the existing information with extra pieces. On the other hand, inserting refers to putting in new information between the original ones. Therefore, the antonyms for "crosses out" are essential to know since they enable us to convey our thoughts accurately and effectively.