pseudonymous
Definitions
Written or published under a false name or pseudonym.
Bearing or using a name other than one's own.
Examples
The author chose to publish her controversial novel under a pseudonymous name to protect her privacy.
Many users on the internet prefer to remain pseudonymous when participating in sensitive political discussions.
Synonyms
anonymous incognito unnamed under a false name nom de plume alias-using
Antonyms
identified named known authentic real-named publicly acknowledged