Antonyms for the word "well-proportioned" can be used to describe something that is irregular or disproportionate. These may include words like disproportionate, unbalanced, uneven, distorted, crooked, misshapen, unsymmetrical, and asymmetrical. These words are typically used to describe things that lack uniformity or balance in terms of their shape or size. For example, a person with an asymmetrical face may be described as having a distorted appearance. Similarly, a piece of art that is misshapen or out of proportion may be considered unbalanced or uneven. In literature, these antonyms may be used to describe characters or settings that are intentionally designed to be irregular or disproportionate for dramatic effect.