How many letters does the top answer for “wrote the black monk” have?

The most common answer is chekhov (7 letters).

Crossword clue: wrote the black monk

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

chekhov 7 letters wd-fact-v3

Russian dramatist whose plays are concerned with the difficulty of communication between people (1860-1904)

wrote the monk 67% similar → lewis

author of the black monk 50% similar → chekhov

wrote black house 50% similar → king

wrote black jack 50% similar → tezuka

wrote black narcissus 50% similar → powell

wrote the black book 50% similar → pamuk

wrote the black cat 50% similar → poe

wrote the black cloud 50% similar → hoyle