A twisted knife is a sharp-edged tool with a blade that has been bent or contorted in an irregular manner. Synonyms for twisted knife include jagged knife, serrated knife, curvy blade, wavy knife, and warped blade. Regardless of the term used, each describes a knife that has an unusual shape, making it difficult to use and potentially dangerous. These knives are not ideal for everyday use and are commonly seen in horror films as a weapon of choice for villains. When purchasing knives, it's essential to choose a reliable and trusted brand with a history of producing high-quality blades that are sharp and easy to use.