Translation guide
Describes someone with extreme, uncritical enthusiasm or zeal, often in religion, politics, sports, or hobbies.
To describe someone who is obsessively devoted to a team, celebrity, hobby, or subculture.
A loanword from English 'mania', used for an enthusiast or fanatic about a specific hobby or interest. Common and neutral.
He's a railway fanatic.
Refers to a geek or nerd, often with obsessive interest in anime, manga, games, etc. Can be self-deprecating or derogatory depending on context.
He's an anime fanatic.
A suffix meaning 'fanatic' or 'crazy about'. Attaches to nouns, e.g., サッカー狂 (soccer fanatic). Slightly stronger than マニア.
He's a soccer fanatic.
General word for 'fan'. Not as strong as 'fanatic', but can be used with intensifiers like 熱狂的なファン (passionate fan).
He's a fanatical fan.
To describe someone with extreme, often irrational, devotion to a religion or ideology.
To describe someone who is fanatical by nature, not tied to a specific interest.
Describes a person who gets deeply absorbed in one thing. Not necessarily negative; implies a personality trait.
He's a fanatic by nature, so he masters everything.
Literally 'heatstroke', but can be used metaphorically for someone who is 'feverishly' devoted. Rare and context-dependent.
マニア is a neutral term for an enthusiast, often used for collectors or hobbyists. オタク is more associated with pop culture and can carry a negative connotation of social awkwardness. 狂 is a stronger, more casual suffix implying crazed obsession.
stamp fanatic (neutral)
anime fanatic (possibly derogatory)
soccer fanatic (crazy about soccer)
The English word 'fanatic' can be translated directly as 狂信者, but this is very strong and usually reserved for religious or political extremists. For everyday enthusiasm, use マニア or オタク instead.
He's a political fanatic.
Specifically a fundamentalist, often used in religious contexts. Implies strict adherence to original principles.
A group of fanatics protested.
He's fanatically absorbed in his work, as if possessed.