How many letters does the top answer for “author of the green book” have?

The most common answer is gaddafi (7 letters).

Crossword clue: author of the green book

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

gaddafi 7 letters wd-fact-v3

Libyan leader who seized power in a military coup d'etat in 1969; deposed the Libyan monarchy and imposed socialism and

author of green book 100% similar → mortensen

author of book 67% similar → sachar

book by authors 67% similar → sikuquanshu

author of doomsday book 50% similar → willis

author of the black book 50% similar → pamuk

author of the book of disquiet 50% similar → pessoa

author of the book of illusions 50% similar → auster

author of the book of lessons 50% similar → khaldun