What is a synonym for "penname"?

Common synonyms include: alias, alias, aliases, atticus, john doe, kukenaam.

Penname

noun

noun ·Rare ·Advanced level

Noun

1
Alternative form of pen name. alt-of, alternative
"Nevertheless Neopythagorean treatises are extant that were written in Alexandria at the end of the first century B.C. Some of these treatises were written by women adopting as pennames the names of earlier female disciples and relatives of Pythagoras."

"Carlos wrote the story under a penname."