How many letters does the top answer for “wrote le cid” have?

The most common answer is corneille (9 letters).

Crossword clue: wrote le cid

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

corneille 9 letters wd-fact-v3

French tragic dramatist whose plays treat grand moral themes in elegant verse (1606-1684)

author of le cid 50% similar → corneille

composer of le cid 50% similar → dennery

wrote le million 50% similar → clair

wrote le testament 50% similar → villon