Crossword puzzle clue "most prolific auth"

Here are the possible solutions for most prolific auth clue

Answer
Clue
Relevancy
anon
Clue
Most prolific auth.
Prolific auth.
Prolific auth.?
World's most prolific author?
Auth. unknown
Unknown auth.
Definition
at once; immediately, also ANAN
melblanc
Clue
"Most prolific" Hollywood actor, per IMDb
adr
Clue
"Guys and Dolls" auth.

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