The term 'sincerely religious' can be described by two crossword solutions: 'DEVOUT' (6 letters) and 'EARNEST' (7 letters). DEVOUT is an adjective that means having or showing deep religious feeling or commitment. It is often used to describe someone who is deeply devoted to their faith. EARNEST is an adjective that means showing sincere and intense conviction. It is often used to describe someone who is serious and passionate about their beliefs. Together, these two words accurately describe someone who is sincerely religious.