1. (a.) Of or pertaining to religion; concerned with religion; teaching, or setting forth, religion; set apart to religion; as, a religious society; a religious sect; a religious place; religious subjects, books, teachers, houses, wars.

2. (a.) Possessing, or conforming to, religion; pious; godly; as, a religious man, life, behavior, etc.

3. (a.) Scrupulously faithful or exact; strict.

4. (a.) Belonging to a religious order; bound by vows.

5. (n.) 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.

Christian Christianlike Christianly God-fearing Mariological abbacomes abbot accurate adoring anthropomorphic anthropotheistic ascetic attentive awesome awful beadsman believing brother caloyer canonic careful celibate cenobite churchgoing close conscientious constant conventual conventual prior correct cosmotheistic critical cultish cultist cultistic deistic delicate demanding detailed devoted devout direct ditheistic divine doctrinal doctrinary dutiful ethical even exact exacting exigent express exquisite faithful fastidious fine finical finicking finicky friar fussy godly grand prior heavenly hermit hieromonach holy honest honorable ineffable inenarrable inerrable inerrant inexpressible infallible inviolable inviolate just lay abbot lay brother mathematical mendicant meticulous micrometrically precise microscopic minute monastic monk monotheistic moral narrow nice noble numinous overconscientious overscrupulous palmer pantheistic particular physicomorphic physicotheological pietistic pilgrim pillar saint pillarist pinpoint pious polytheistic prayerful precise precisianistic precisionistic prior punctilious punctual refined religieux religiously exact reverent reverential righteous rigid rigorous sacred sacrosanct scientific scientifically exact scrupulous scrutinizing severe solemn spiritual spiritual-minded square staunch steadfast strict stylite subtle tender-conscienced theistic theological tritheistic TRUE undeviating unerring unspeakable unswerving untouchable unutterable upright venerable venerational venerative virtuous worshipful