気違い

lunatic, madman

noun Rare #27,387
lunatic, madman A highly offensive and outdated term for a person with a mental illness; avoid using it. Modern Japanese usually uses more neutral wording depending on the context.
JA: 彼は気違い扱いされた。
EN: He was treated like a lunatic.
Declension of 気違い
気違いキチガイ

大勢の人に気違いだと思われてるんですよ

A lot of people think I'm crazy.

僕が最後に自分の考えを伝えた人は僕を気違いだと思ったようだ

The last person I shared my thoughts with seemed to think I was crazy.

どこもかしこも気違いだらけだ

There are crazies everywhere.

— Брат 2 (2000)

大抵の人は僕を気違いだと思っている

Most people think I'm crazy.

だってこいつ気違い

Because this guy's a nutcase.

— ムーンライズ・キングダム (2012)

気違い沙汰

That's insane.

— 人生スイッチ (2014)

デルバート気違いだと思うよ

I think Delbert is crazy.