How many letters does the top answer for “director of the world according to garp” have?

The most common answer is close (5 letters).

Crossword clue: director of the world according to garp

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

close 5 letters wd-fact-v3

at or within a short distance in space or time or having elements near each other

hill 4 letters wd-fact-v3

a local and well-defined elevation of the land

director of in this world 50% similar → winterbottom