The antonyms for the word "more well-kept" can vary depending on the context. However, some common antonyms include unkempt, dirty, disheveled, messy, untidy, and disorganized. These words represent the opposite of well-kept or well-maintained, indicating a lack of care, attention or cleanliness. To contrast with well-kept, these adjectives are commonly used to describe things that are shabby, unclean, disordered, or neglected. Whether describing a home, a park, or a person's appearance, the antonyms of more well-kept suggest a lack of pride or responsibility that can be detrimental to the overall impression.