The opposite of being "most methodized" is to be disorganized. This means a lack of structure or plan. Other antonyms for "most methodized" could include chaotic, haphazard, irregular, messy, random, unplanned, unstructured, and unsystematic. When someone is not methodized, tasks are left incomplete, deadlines are missed, and there is a general sense of unproductivity. It is important to remember, however, that being unmethodical does not necessarily mean one is lazy or unproductive - some people work better in a more fluid environment. Ultimately, it is up to each individual to determine what style of work suits them best.