14 letters · 15 points in Scrabble
noun a person who is broad-minded and tolerant (especially in standards of religious belief and conduct)
adjective unwilling to accept authority or dogma (especially in religion)
originFrom Latin lātitūdin- + -arian, from oblique stem of Latin lātitūdō, from lātus + -tūdō. By surface analysis, latitude + -arian.
Etymology from Wiktionary, CC BY-SA 3.0