What is the word for a person who strongly believes in their own adopted or birth religion and opposes or criticizes other religions?
closed as off-topic by tchrist♦, aedia λ, Rory Alsop, Robusto, Kit Z. Fox♦ Jul 18 '14 at 15:01
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- "Questions on choosing an ideal word or phrase must include information on how it will be used in order to be answered. For help writing a good word or phrase request, see: About single word requests" – aedia λ, Kit Z. Fox
Zealot might be the word you're looking for.
You can use the term a religious fanatic.
Religious fanaticism is fanaticism related to a person's, or a group's, devotion to a religion.
fanatic — a person who is (too) enthusiastic about something.
Ideologue seems to fit, its use does not seem to me to be exclusively for religious views but seems quite appropriate to this case.
ideologue — zealous supporter of ideology: a particularly zealous or doctrinaire supporter of an ideology
A bigot (or, more specifically, a religious bigot) fits this.
Bigot - noun /ˈbɪgət/
: a person who strongly and unfairly dislikes other people, ideas, etc. : a bigoted person; especially : a person who hates or refuses to accept the members of a particular group (such as a racial or religious group)
: a person who is obstinately or intolerantly devoted to his or her own opinions and prejudices; especially : one who regards or treats the members of a group (as a racial or ethnic group) with hatred and intolerance
Sincere (or believer) comes to mind, as it is impossible to be a Christian and not consider all other religions to wrong.
Therefore there are two options.
- Someone does not believe the above to be true, and therefore they are deceiving themselves and others by claiming to be a Christian.
- They believe the above to be true, and therefore they MUST consider all other religions to be wrong.
As I understand it, Islam has passages in the Qur'an to the same effect.
Dogmatic - adjective \dôgˈmatik\
inclined to lay down principles as incontrovertibly true
This term can be applied in a non-religious context, so it might not be quite right for you.
Triumphalist is the term that is used among scholars.
It implies that the believer is under the impression that their model of the Universe is a 1:1 perfect description of the Universe, is complete and cannot be added to or nuanced, or explained with different metaphors. They believe that their model is the ultimate triumph in describing truth, so any model that differs in any way cannot be as accurate and must therefore be suppressed as 'misleading' and therefore 'evil'.