The antonyms for the term "more well kept" are several, including neglected, shabby, unkempt, dishevelled, scruffy, sloppy, tacky, and untidy. Neglected implies a lack of care or attention given to the upkeep of something. Shabby refers to something that is old and worn, showing signs of age and damage. Unkempt suggests a lack of order or tidiness in appearance. Dishevelled refers to hair or clothing that is messy and untidy. Scruffy implies a lack of cleanliness or proper maintenance. Sloppy suggests a lack of attention to detail in presentation. Tacky refers to something that is tasteless or vulgar in appearance. Untidy suggests a lack of order or organization.