How many letters does the top answer for “one who adheres to tradition.” have?

The most common answer is traditioner (11 letters).

Crossword clue: one who adheres to tradition.

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

traditioner 11 letters web-def

an inherited pattern of thought or action

traditionist 12 letters web-def

One who adheres to tradition.

one who adheres to romanism. 50% similar → romanist