General:
* Fairy believer: This is the most straightforward option.
* Fairy enthusiast: This implies a strong interest in fairies, beyond just belief.
* Fairy aficionado: This implies a deep knowledge and appreciation of fairies.
More specific:
* Faerieist: This is a term sometimes used for someone who believes in fairies in a spiritual or religious context.
* Faerie believer: This term emphasizes belief in the existence of fairies.
* Fairy mystic: This suggests a belief in fairies as part of a spiritual or mystical belief system.
Informal:
* Fairy chaser: This term is often used playfully or humorously for someone who believes in fairies and searches for them.
* Fairy fanatic: This is a less neutral term and implies an obsessive belief in fairies.
Other options:
* Someone who believes in the existence of fairies. This is the most clear and accurate way to describe someone who believes in fairies.
* Someone who is fascinated by fairies. This implies a strong interest in fairies, but not necessarily belief in their existence.
Ultimately, the best word to use will depend on the specific situation and the tone you want to convey.