The antonym for the term "more dietary" would be less dietary. The term "more dietary" refers to consuming foods that are healthy and nutritious, whereas the opposite, "less dietary," would refer to consuming foods that are unhealthy and non-nutritious. Consuming a more dietary diet can help individuals maintain a healthy weight and prevent various health conditions, such as diabetes, heart disease, and high blood pressure. Therefore, it is essential to incorporate healthy foods, such as fruits, vegetables, whole grains, lean proteins, and healthy fats, into one's diet to maintain a healthy lifestyle.