The term 'not flabby' can be described by three crossword solutions: 'FIRM, ' 'toned, ' and 'TAUT.' FIRM refers to something that is solid, strong, and resistant to pressure. Toned refers to having a body with well-developed muscles. Lastly, TAUT means being stretched tight or pulled together. All three words describe the same concept of not being flabby, which is having a body that is strong, muscular, and tight.