How many letters does the top answer for “the religion or system of doctrines of the brahmans; the religion of brahma.” have?

The most common answer is brahmanism (10 letters).

Crossword clue: the religion or system of doctrines of the brahmans; the religion of brahma.

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

brahmanism 10 letters web-def

the religious beliefs of ancient India as prescribed in the sacred Vedas and Brahmanas and Upanishads

brahminism 10 letters web-def

The religion or system of doctrines of the Brahmans; the religion of Brahma.