All 3 Uses

anonymous
in
Prisoner B-3087
(Edited)

From now on, you have no name, no personality, no family, no friends. Do you understand? Nothing to identify you, nothing to care about. Not if you want to survive. You must be anonymous to these monsters.
p. 68.3 *

anonymous = lacking individuality or interesting features
There was still a chance Goeth would get me at roll call—no one was safe, not even the kapos—but with Moshe's help, I learned to be anonymous enough to survive for months.
p. 73.3
I had to be anonymous.
p. 85.8

anonymous = lacking distinctiveness or interesting features

Definitions:

(1) (anonymous as in: an anonymous author)
an unknown person, or of an unknown person -- such as an unknown author, or donation of an unknown person
(2) (anonymous as in: an anonymous, uninteresting house)
lacking individuality or interesting features
(3) (meaning too rare to warrant focus)