Misstyle is a relatively uncommon word that refers to a stylistic mistake. However, there are a variety of more common synonyms that can be used in its place. For example, the word "miscalculate" can refer to an error in estimation or judgment. "Mistake" is a general term for any type of error, whether it is a misunderstanding or a misinterpretation. "Misperceive" highlights the fact that the error is related to perception or understanding, while "misinterpret" refers to a specific type of misunderstanding. Other synonyms for misstyle might include "misrepresent," "mislabel," or "misidentify," depending on the context of the mistake.