In Buddhism a nefarious person who denies and criticizes Buddhism is called ichi-sendai (一闡提) (or simply sendai), which also means simply 'a person who has difficulty becoming Buddha,' so that Bosatsus such as Jizo Bosatsu and Kannon Bosatsu, who dared not to become Buddha through their great mercy in relieving all living things, are called 'Daihi Sendai' and are clearly distinguished from the normal sendai.
仏教上では、非道者で仏法を否定、誹謗する者を一闡提（略して闡提）というが、これには単に「成仏し難い者」という意味もあることから、一切の衆生を救う大いなる慈悲の意志で、あえて成仏を取り止めた地蔵菩薩や観音菩薩のような菩薩を「大悲闡提」と称し、通常の闡提とは明確に区別する。