How many letters does the top answer for “wrote little brother” have?

The most common answer is doctorow (8 letters).

Crossword clue: wrote little brother

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

doctorow 8 letters wd-fact-v3

United States novelist (born in 1931)

author of little brother 50% similar → doctorow

wrote a little life 50% similar → yanagihara

wrote joseph and his brothers 50% similar → mann

wrote little dorrit 50% similar → dickens

wrote little eyolf 50% similar → ibsen

wrote little nemo 50% similar → mccay

wrote little women 50% similar → alcott

wrote rocco and his brothers 50% similar → delon, visconti