heteronymous
Definitions
Having a different name; bearing a name other than one's own.
Relating to or characterized by heteronymy, specifically involving words that are spelled the same but have different meanings and pronunciations.
In anatomy, relating to or situated on the opposite side of the body.
Examples
The author published his experimental poetry under a heteronymous persona to separate it from his academic work.
Many writers throughout history have adopted heteronymous identities to explore different facets of their creative voices.