When we talk about something being "well formed," we're typically referring to its shape or structure in a positive light. Antonyms for "more well formed" might include terms like misshapen, deformed, or irregular. These words suggest that the object or idea in question lacks the symmetry, balance, or orderliness that we typically associate with something being well formed. Other antonyms might include jagged, asymmetrical, or disorganized, depending on the context in which the term is used. By using antonyms, we can help to emphasize the negative aspects of an object or idea, and highlight the ways in which it falls short of our expectations.