Antonyms for "cleaning it up" include "making a mess," "cluttering," "dirtying," "scattering," "spreading," "trashing," "tangling," "unsettling," and "disheveling." When someone is cleaning something up, they are usually organizing, removing debris or dirt, and generally making the area neat and tidy. Antonyms present an opposite meaning, indicating actions or behaviors that could result in disarray or a chaotic environment. It is essential to be mindful of how we handle our space to maintain cleanliness and a safe environment. Whether it be your house, workplace or public space, it is crucial to ensure it is well-maintained, clutter-free, and tidy.