How many letters does the top answer for “wrote the nigger of the 'narcissus'” have?

The most common answer is conrad (6 letters).

Crossword clue: wrote the nigger of the 'narcissus'

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

conrad 6 letters wd-fact-v3

English novelist (born in Poland) noted for sea stories and for his narrative technique (1857-1924)

author of the nigger of the 'narcissus' 50% similar → conrad

wrote black narcissus 50% similar → powell

wrote narcissus and goldmund 50% similar → hesse