The word "un-tidy" denotes something that is not organized or neat. However, this term has a number of antonyms that convey a sense of orderliness and cleanliness. Some of these words include "tidy," "neat," "orderly," "organized," "systematic," "methodical," "spotless," "immaculate," "squeaky-clean," and "pristine." Each of these antonyms conveys a sense of structure and cleanliness that is in direct contrast to the image of chaos that is associated with the word "un-tidy." By using these antonyms, one can describe a space or individual that is exceptionally clean and organized.