The antonyms for the word "most ill-shaped" could be aesthetically pleasing, well-proportioned, beautiful, attractive or symmetrical. When something is described as "most ill-shaped," it implies that it is unattractive or lacking in proportion, size or shape. The antonyms for this phrase will describe objects or designs that are pleasing to the eye, with a strong, balanced structure. A piece of art, for example, can be described as beautiful if it has a well-balanced composition with a harmonious color palette. Similarly, a building or structure can be described as attractive if it has a symmetrical design or an interesting architectural style that appeals to the viewer.