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

The most common answer is day (3 letters).

Crossword clue: author of the guild

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

day 3 letters wd-fact-v3

time for Earth to make a complete rotation on its axis

author of 1q84 50% similar → murakami

author of 2666 50% similar → bolano

author of 4 3 2 1 50% similar → auster

author of q11368 50% similar → kernighan, ritchie

author of q13415681 50% similar → hamill

author of q134773 50% similar → zemeckis

author of q1457000 50% similar → knuth

author of q16276 50% similar → roddenberry