n.
  - a writer of a book, article, or report.
 - an originator of a plan or idea.
 
v.
 be the author or the originator of.
 
  Derivative
  
    - authoress n.
  - authorial
  
/ɔːˈθɔːrɪəl/
 adj.  - authorship n.
 
   
  Etymology
  ME: from OFr. autor, from L. auctor, from augere ‘increase, originate’.