1. the identity of the person who wrote a particular work
2. the activity or profession of writing books, articles, or other works
3. the origin or source of something created

Examples

• The authorship of the anonymous novel remained a mystery for decades.
• Scholars debated the authorship of several Shakespeare plays.
• She decided to pursue authorship as a full-time career.
• The authorship of the controversial policy was traced back to the committee.
• DNA evidence helped establish the authorship of the ancient manuscript.
• His transition from journalism to book authorship was successful.
• The authorship of the popular song was disputed by two composers.