The term "mussed up" is commonly used to describe something that is disorderly, untidy, or rumpled. Antonyms for "mussed up" include neat, tidy, organized, orderly, and immaculate. These words depict a sense of cleanliness, perfection, and orderliness. Neat and tidy refer to things that are arranged in an orderly manner, while organized means that things are systematically arranged. With an immaculate surrounding, there's not even a speck of dirt or dust to be found. By using these antonyms, one can describe the opposite of a messy or untidy situation, which can be useful in various situations, whether at home or at work.