Antonyms for the word "more diligent" indicate a lack of effort or care. Some antonyms for diligent may include careless, lazy, neglectful, lethargic, indifferent, and inattentive. Someone who is not diligent may be unwilling to work hard, pay attention to detail, or meet deadlines. They may lack motivation or simply not care enough about the task at hand. It is important to strive for diligence and attention to detail in all aspects of life, whether it is in education, work or personal life. Antonyms for diligence should serve as a reminder of what not to be, and encourage us to put forth our best effort always.