"Vegetable-eating" is a term used to describe someone who mainly eats vegetables as part of their diet. However, there are other ways to express this concept using different words or phrases. One synonym could be "plant-based diet" which implies that the focus is on consuming plants rather than meat. Another alternative is "vegetarian eating" which specifically refers to the practice of abstaining from meat and animal products. "Herbivorous" is also a viable option, emphasizing the consumption of plants as a means of sustenance. Ultimately, it is important to find the terminology that best conveys the intended meaning and promotes a healthy, balanced diet.