Fictitious name is a term that refers to a name that is not the legal name of an individual or business entity. There are several synonyms for the term fictitious name such as assumed name, trade name, alternate name, pseudonym, pen name, nom de plume, and alias. Assumed name and trade name are the most commonly used synonyms for fictitious name in the business world. These names can be used to conduct business activities under a name that is different from the legal name of an individual or corporate entity. Pseudonym and nom de plume are synonyms that are commonly used in the literary world for authors who use a different name to publish their work.