Unnamed, unspoken.

Not provided with a name; nameless. Also as n.

Not identified by name; of unknown authorship; anonymous.

= untitled, adj.1 2.

Unnamed, undesignated.

Having no title (in various senses of title, n.); untitled.

Of a person or thing: not identified by name; of unknown name or identity; whose real identity is unknown or untraceable. Also of a thing: having…

That has not hitherto been named.

Not named, unnamed, anonymous.

Unnamed, nameless.

Unnamed.

(un-, prefix1 affix 2.)

(un-, prefix1 affix 2.)