Religious

1. Possessing, or conforming to, religion; pious; godly; as, a religious man, life, behavior, etc.
2. Scrupulously faithful or exact; strict.
3. Belonging to a religious order; bound by vows.
4. A person bound by monastic vows, or sequestered from secular concern, and devoted to a life of piety and religion; a monk or friar; a nun.