Flabby : (of a part of a person's body) soft, loose, and fleshy.Healthy : in a good physical or mental condition; in good health.Tall : of great or more than average height, especially (with reference to an object) relative to width.Skinny : (of a person or part of their body) unattractively thin.Thin : with opposite surfaces or sides that are close or relatively close together.Antonym of Flabby is Skinny