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"authorship" is also used as a crossword clue. If that's what you saw, the answer is often penning (7 letters).
Definitions
the act of initiating a new idea or theory or writing
Word origin
From author + -ship.
Used in a sentence
“We are unaware of the authorship of this book.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Byline credit”10 letters
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