Which word indicates a person who is marked by false religiousness?

The word that indicates a person marked by false religiousness is "hypocritical." A hypocritical person pretends to have virtues or beliefs that they do not actually hold, often exhibiting a façade of righteousness while acting contrary to those principles in private or in other situations. This term points to a lack of genuine belief or commitment, contrasting sharply with true expressions of faith or devotion.

"Pious," on the other hand, typically describes someone who is genuinely religious and shows reverence towards a deity or religious practices. "Devout" is also a positive term that refers to someone who is deeply committed to their faith and practices it sincerely. "Sincere" suggests honesty and a genuine nature, which does not align with the notion of false religiosity. Therefore, while "pious" may connote a sense of respectfulness towards religion, it does not imply falsehood, making it an incorrect choice in this context.