A person addicted to religion or a religious zealot.

Roget 988: impiety; sin etc. 945; irreverence; profaneness etc. adj.; profanity, profanation; blasphemy, desecration, sacrilege; scoffing etc. v.. [feigned piety] hypocrisy etc. (falsehood) 544; pietism, cant, pious fraud; lip devotion, lip service, lip reverence; misdevotion^†, formalism, austerity; sanctimony, sanctimoniousness etc. adj.; pharisaism, precisianism^†; sabbatism^†, sabbatarianism^†; odium theologicum [Lat.], sacerdotalism^†; bigotry etc. (obstinacy) 606, (prejudice) 481; blue laws.    hardening, backsliding, declension, perversion, reprobation.    sinner etc. 949; scoffer, blasphemer; sacrilegist^†; sabbath breaker; worldling; hypocrite etc. (dissembler) 548; Tartufe^†, Mawworm^†.    bigot; saint [Iron.]; Pharisee; sabbatarian^†, formalist, methodist, puritan, pietist^†, precisian^†, religionist, devotee; ranter, fanatic, juramentado^†.    the wicked, the evil, the unjust, the reprobate; sons of men, sons of Belial, the wicked one; children of darkness.    ... show more