/ ˌænəˈnɪməti; NAmE / noun [ U ]
1.
the state of remaining unknown to most other people :
Names of people in the book were changed to preserve anonymity.
the anonymity of the city (= where people do not know each other)
( especially NAmE )
He agreed to give an interview on condition of anonymity (= if his name was not mentioned).
2.
the state of not having any unusual or interesting features :
the anonymity of the hotel decor