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Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "authoress" is derived from the combination of the noun "author" and the suffix "-ess".
The term "author" comes from the Latin word "auctor" meaning "promoter, producer, father, or founder". It entered the English language through Old French in the 14th century.
The suffix "-ess" is originally from Old English "-ness" (used to form abstract nouns) or from Old French "-esse" (used to form feminine nouns). Over time, it evolved into "-ess" in Middle English and was used to denote female gender or profession.
The word "authoress" was initially used in the 17th century to differentiate female writers from their male counterparts. However, in contemporary English, the term "author" is typically considered gender-neutral, and "authoress" has fallen out of common usage due to the preference for gender-inclusive language.