Translation guide
How to express 'going insane' in Japanese, from clinical madness to casual exaggeration.
To describe someone genuinely losing their mental faculties, becoming psychotic, or going mad in a serious, medical sense.
Literally 'one's spirit/mind goes mad'. The most direct and common way to say 'go insane' in a serious sense.
彼は気が狂ってしまった。
He went insane.
Means 'to go mad' or 'to become deranged'. Often used in more formal or literary contexts, or to describe a sudden onset of madness.
彼女は突然発狂した。
She suddenly went insane.
The verb 'to go mad/insane'. Can be used on its own, but often combined with other words for clarity.
頭が狂ったのか？
Have you gone insane? (lit. Has your head gone mad?)
To describe someone acting wildly, hysterically, or out of control due to anger, grief, or extreme emotion, not necessarily permanent mental illness.
Literally 'one's mind is touched/deranged'. Implies a temporary or sudden loss of sanity, often due to shock or stress.
あまりのショックで気が触れたようだ。
She seems to have gone insane from the shock.
Literally 'one's head becomes strange'. A common, slightly informal way to say someone is going crazy or losing it.
こんなに働いたら頭がおかしくなりそう。
If I work this much, I'll go insane.
Means 'to lose one's sanity/reason'. More formal, can be used for both temporary and permanent states.
彼は怒りのあまり正気を失った。
He went insane with rage.
To express that someone is fanatical, obsessed, or wildly enthusiastic about a hobby, interest, or activity.
Means 'to become absorbed/crazy about ~'. The most natural way to say you're crazy about something.
彼はゲームに夢中になっている。
He's gone insane for video games.
Similar to 夢中, but slightly more formal. Means 'to be enthusiastic/absorbed in ~'.
彼女はアイドルに熱中している。
She's gone insane for idols.
A suffix meaning '~mania' or '~crazy'. Used in compound words like サッカー狂 (soccer fanatic).
彼はサッカー狂だ。
He's soccer-crazy.
To express that something or someone causes another person to lose their sanity or become extremely frustrated.
Causative form of 気が狂う. Means 'to drive someone insane'.
その騒音が彼の気を狂わせた。
The noise drove him insane.
Causative form of 頭がおかしくなる. More colloquial.
この仕事は私の頭をおかしくさせる。
This job is driving me insane.
Casual, hyperbolic statements used when something is extremely annoying, surprising, or hard to believe.
Literally 'seems like I'll go insane'. A common, natural way to say 'I'm going crazy' from stress or frustration.
宿題が多すぎて気が狂いそうだ。
I have so much homework I'm going insane.
Similar to above, slightly more colloquial. 'I feel like I'm losing my mind.'
この暑さで頭がおかしくなりそう。
This heat is making me go insane.
Literally 'It's no good anymore'. A very common exclamation of frustration, often translated as 'I'm going crazy' or 'I can't take it anymore'.
もうダメだ、頭が爆発しそう。
I'm going insane, my head is going to explode.
Be careful with direct translations like 'go insane' in casual contexts. Japanese often uses phrases like 頭がおかしくなる (head becomes strange) or 気が狂いそう (seems like I'll go mad) rather than a single verb. Using 狂う directly can sound too strong or clinical in everyday conversation.
気が狂う is the most common and neutral way to say 'go insane'. 発狂する is more formal and often implies a sudden, dramatic onset of madness. In casual speech, 気が狂う is preferred.