The three poisons in the Mahayana tradition or the three unwholesome roots in the Theravada tradition are a Buddhist term that refers to the three root kleshas that lead to all negative states. These three states are delusion, also known as ignorance; greed or sensual attachment; and hatred or aversion. These three poisons are considered to be three afflictions or character flaws that are innate in beings and the root of craving, and so causing suffering and rebirth.