The term "dietist" is not widely used, but there are many synonyms that describe professionals who provide nutritional advice and guidance. One of the most common synonyms is "dietitian," which is a licensed healthcare professional who specializes in meal planning and nutrition counseling. Another common synonym is "nutritionist," which is someone who has expertise in food and dietary science, and provides advice and recommendations on healthy eating habits. Other synonyms include "health coach," "wellness counselor," "registered dietitian," and "food consultant." These professionals work with individuals and groups to develop healthy eating plans, manage specific health conditions, and promote overall nutrition and wellness.