Definition of Authorless

Babylon English Dictionary
anonymous
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Authorless Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
(a.)
Without an author; without authority; anonymous.
  
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
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authorless
\au"thor*less\, a. without an author; without authority; anonymous.