What is another word for thin down?
Pronunciation: [θˈɪn dˈa͡ʊn] (IPA) 
"Thin down" is a versatile phrase that has several synonyms. One of the most common synonyms is "lose weight", which means to become thinner by shedding some pounds. Another synonym is "slim down", which implies a gradual process of reducing body mass through exercise and healthy eating habits. "Trim down" is another synonym that connotes a deliberate effort to reduce one's body fat or weight through disciplined actions. Still, another synonym is "shrink down", which implies a more rapid and sudden reduction in size or weight. In short, "thin down" has multiple synonyms, and the choice depends on the context and degree of weight loss desired.
