In religion and ethics, evil refers to the morally or ethically objectionable behaviour or thought; behavior or thought which is hateful, cruel, excessively sexual, or violent, devoid of conscience. Evil is sometimes defined as the absence of a good which could and should be present.
In most cultures, evil is used to describe acts or thoughts which are contrary to an established religion, or which could bring about suffering and death — the opposite of good. wikipedia
usually evil is performed through the seven sins: sloth, gluttony, greed, jealousy, lust, wrath and pride. it is a negative act or thought. me