1.Definition: concerned with sacred matters or religion or the church

"Religious texts", "A member of a religious order"

Related Adjective(s):spiritual

2.Definition: extremely scrupulous and conscientious

"Religious in observing the rules of health"

3.Definition: having or showing belief in and reverence for a deity

"A religious man", "Religious attitude"

4.Definition: of or relating to clergy bound by monastic vows

"The religious or regular clergy conducts the service"