anonym

[ an-uh-nim ]
/ ˈæn ə nɪm /

noun

an assumed or false name.
an anonymous person or publication.

Origin of anonym

1805–15; < French anonyme < Greek anṓnymos anonymous

British Dictionary definitions for anonyms

anonym
/ (ˈænənɪm) /

noun

a less common word for pseudonym
an anonymous person or publication