How many letters does the top answer for “unwilling to accept authority or dogma (especially in religion)” have?

The most common answer is latitudinarian (14 letters).

Crossword clue: unwilling to accept authority or dogma (especially in religion)

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

latitudinarian 14 letters wn-def

a person who is broad-minded and tolerant (especially in standards of religious belief and conduct)

undogmatic 10 letters wn-def

unwilling to accept authority or dogma (especially in religion)