Nameless

Nameless, unnamed, unnominal, nonnominal, nullnominal, or anominal is a form of transnominal or name non-corforming in which one identifies with no names or does not feel connected to any name. Some nameless people may go by a name in some situations because it is societally expected, by they do not identify with that name. Namelessness is not necessarily the same as when one has not decide on a name yet. While some people in that situation may identify as nameless, for other nameless people it is not temporary state and one is not looking for a name.

It's similar to pronounless.