pseudonym
nounUK /ˈsjuː.də.nɪm/
US /ˈsuː.də.nɪm/
A pseudonym is a fake name that someone uses instead of their real name.
The famous writer used a pseudonym so nobody would know who she really was.
RELATED WORDS
OTHER MEANINGS
2. A name used by an author on a book instead of their real name.
Mark Twain is the pseudonym of Samuel Clemens.
3. A false name used to hide who someone is in public.
The singer checked into the hotel under a pseudonym.
4. A name used online instead of a real name.
He posts funny videos under a pseudonym.