From Longman Dictionary of Contemporary Englishauthoressau‧thor‧ess /ˈɔːθərɪs $ ˈɒː-/ noun [countable] old-fashioned WRITEa woman who writes books SYN writer
Examples from the Corpus
authoress• Somewhere in the smoky crowd the authoress and photographer, Jill Freedman from New York, was holding court.• I know absolutely nothing about this authoress, except for the fact that she has written many other horror stories. 