Translation guide
The concept of fanaticism—extreme, uncritical zeal or devotion—is expressed in Japanese through words describing obsessive enthusiasm, religious fervor, or blind belief. The most common and versatile term is 熱狂 (nekkyō), but other options carry nuances of madness, blind faith, or excessive single-mindedness.
Expressing intense, often uncritical passion for a cause, hobby, or idea.
The most common and neutral word for fanaticism or wild enthusiasm. Can be used for sports, music, politics, etc.
彼のサッカーに対する熱狂はとどまるところを知らない。
His fanaticism for soccer knows no bounds.
Literally 'mad belief'. Strongly implies blind, irrational faith, often religious or ideological.
彼の狂信的な態度は周囲を困惑させた。
His fanatical attitude baffled those around him.
Means being absorbed or obsessed with something. Less extreme than 熱狂, but can imply fanaticism when used with intensifiers.
彼はゲームに熱中しすぎて、仕事を忘れた。
He was so fanatical about the game that he forgot about work.
Means 'madness' or 'insanity'. Can be used metaphorically for extreme fanaticism, but is strong and literary.
その革命家の目には狂気が宿っていた。
There was fanaticism in the revolutionary's eyes.
Specifically referring to extreme, often dangerous religious zeal.
The standard term for religious fanaticism. Often used in compounds like 宗教的狂信 (shūkyōteki kyōshin).
宗教的狂信は時に悲劇を生む。
Religious fanaticism sometimes leads to tragedy.
A phrase meaning 'fervor of faith'. Less negative than 狂信, but still implies intense devotion.
彼の信仰の熱狂は人々を感動させたが、同時に怖がらせた。
His religious fanaticism moved people but also frightened them.
Describing uncritical loyalty or worship of a leader, idea, or system.
Literally 'blind belief'. Perfect for describing uncritical faith in a person or doctrine.
彼の支持者たちは盲信に近い忠誠を示した。
His supporters showed a loyalty bordering on fanaticism.
Means being deeply fascinated or captivated by someone. Can imply fanatical admiration.
Focusing on the aspect of being overly devoted to one thing, neglecting everything else.
Means immersing oneself completely in something. Often used for hobbies or work, but can imply unhealthy obsession.
彼の研究への没頭は狂気の沙汰だった。
His fanatical devotion to research was insane.
Means single-minded or wholehearted. Can be positive, but in context can mean fanatical.
熱狂 (nekkyō) is the broadest term for intense enthusiasm, not necessarily negative. 狂信 (kyōshin) implies irrational, often dangerous belief, especially religious. 盲信 (mōshin) emphasizes blind, unquestioning faith in a person or idea. Choose based on the nuance you need.
The English word 'fanatic' is often translated as 狂信者 (kyōshinsha) or 熱狂者 (nekkyōsha), but these can sound overly dramatic. In casual contexts, マニア (mania) or オタク (otaku) might be more natural for hobby enthusiasts.
彼女はその指導者に心酔していた。
She was fanatical about the leader.
His single-minded faith worried those around him.