n. The act of alienating, or the state of being alienated.n. The diversion of lands from ecclesiastical to secular ownership.n. A withdrawing or an estrangement, as of feeling or the affections.n. Deprivation, or partial deprivation, of mental faculties; derangement; insanity.n. The state in which a person has completely forgotten his identity and becomes a new person, alien to his former self.