The crossword solution for the term DO BAD is SIN. SIN is a religious concept that refers to an action or thought that goes against the moral code of a particular religion. It is often seen as a transgression against God and is considered to be a form of disobedience. In Christianity, SIN is seen as a violation of the Ten Commandments and is believed to be punishable by God. In other religions, such as Buddhism, SIN is seen as an act of ignorance or selfishness that leads to suffering.