The term "bad actor" is a common expression used in various fields, including finance and entertainment. In general terms, it refers to someone who behaves immorally or unethically, often causing harm to others through their actions. However, when referring specifically to the world of acting, this phrase takes on another meaning entirely.
In the context of film and television production, a "bad actor" is an individual whose performance fails to meet expectations, either due to lack of skill or poor delivery. This term can be used both positively and negatively - for example, some directors may intentionally cast so-called 'bad actors' in order to achieve a specific effect or create contrast with more polished performances.
Overall, the phrase "bad actor" is subjective and depends on the perspective of the observer.