1. The plural of pseudonymity; instances or practices of using a pseudonym or false name.
Usage: Formal; often used in academic or literary contexts to discuss the use of pen names or anonymous authorship.
2. The quality or state of being pseudonymous; the condition of writing or publishing under an assumed name.
Usage: Literary and academic usage; refers to the characteristic or practice itself rather than individual instances.

Examples

• Many Victorian authors employed pseudonymities to protect their reputations or explore controversial topics.
• The pseudonymities of early internet forums allowed users to express themselves freely.
• Scholars debate the pseudonymities of certain biblical texts and their authorship.
• The author's various pseudonymities made it difficult for readers to track her complete body of work.
• Digital platforms have increased the prevalence of pseudonymities in online publishing.
• The pseudonymities adopted by political dissidents served as a form of protection.
• Literary critics study the pseudonymities of the Romantic period to understand publishing conventions.