five cardinal sins ［五逆・五逆罪］ ( go-gyaku or go-gyakuzai): The five most serious offenses in Buddhism. Explanations vary according to the sutras and treatises. The most common is (1) killing one’s father, (2) killing one’s mother, (3) killing an arhat, (4) injuring a Buddha, and (5) causing disunity in the Buddhist Order. It is said that those who commit any of the five cardinal sins invariably fall into the hell of incessant suffering. The last three offenses are collectively referred to as the three cardinal sins. Devadatta is well known for committing these three.