How many letters does the top answer for “one who holds to the doctrine of free will.” have?

The most common answer is libertarian (11 letters).

Crossword clue: one who holds to the doctrine of free will.

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

libertarian 11 letters web-def

someone who believes the doctrine of free will

one who holds the doctrine of impanation. 50% similar → impanator

one who holds the doctrine of intuitionalism. 50% similar → intuitionalist

one who holds to the doctrine of necessitarianism. 50% similar → necessitarian