anonymity

Universal Words noun [U] the state of remaining unknown to most other people: Names of people in the documentary were changed to preserve anonymity. * the anonymity of the big city (= where people do not know each other) * (especially AmE) He agreed to give an interview on condition of anonymity (= if his name was not mentioned). * The person donating the money insisted on complete anonymity. * Anyone providing information to the police will be guaranteed anonymity.