Demerit. In Occult and Buddhistic parlance, a constituent of Karma. It is through avidya or ignorance of vidya, divine illumination, that merit and demerit are produced. Once an Arhat obtains full illumination and perfect control over his personality and lower nature, he ceases to create merit and demerit.
Source: H.P.Blavatsky - The Theosophical Glossary