How many letters does the top answer for “author of the master builder” have?

The most common answer is ibsen (5 letters).

Crossword clue: author of the master builder

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

ibsen 5 letters wd-fact-v3

realistic Norwegian author who wrote plays on social and political themes (1828-1906)

author of the master and margarita 50% similar → bulgakov

author of the puppet masters 50% similar → heinlein

wrote the master builder 50% similar → ibsen