不動

acala; niścala; dhruva. The unmoved, immobile, or motionless; also 無動 the term is used for the unvarying or unchanging, for the pole-star, for fearlessness, for indifference to passion or temptation. It is a special term of Shingon 異言 applied to its most important Bodhisattva, the 不動明王 q. v.