How to Say “You’re Crazy” in Japanese

狂っている
kurutte iru
The English phrase "you're crazy" is translated into Japanese as 狂っている (kurutte iru).
狂っている is used to describe someone who is mentally ill or behaving in a completely irrational way. While it can refer to mental illness, it is frequently used colloquially to describe someone's actions or ideas as completely irrational or absurd.

Is there a formal and an informal way to say it?

In casual speech, the i in the continuous form 狂っている is often dropped to become 狂ってる.

How does it change in a sentence?

The form 狂っている describes a continuous state of being crazy, rather than a sudden action of going mad.

How do you pronounce it?

kurutte iru

Did you know?

  • In Japanese, the word 狂う (kurau) can also be used to describe a mechanical device or a schedule that has gone wrong. You might use it to say that a clock is 'crazy' or that a plan has been 'thrown off' its track.
  • While English speakers might say someone is 'crazy' to mean they are being silly, using 狂っている in Japanese carries a much heavier, more literal weight of actual insanity. Using it as a joke can often feel unintentionally dark or insensitive to Japanese listeners.
  • In certain artistic or literary contexts, the word 狂い (kurui) can refer to a state of 'artistic madness' or 'frenzy'. This transforms the negative connotation of being 'crazy' into a description of intense, obsessive passion.

Examples in context

  • お前は狂っている。
    You're crazy.
    Tatoeba #1484554 by marshmallowcat, translation #2047350 by AlanF_US
  • そんな考え方は狂っている。
    Sonna kangaekata wa kurutte iru.
    That way of thinking is crazy.

Example conversation

Kenta suggests a very risky and irrational idea to Himari.

  1. 健太 Kenta

    明日、いきなり世界一周旅行に行こうぜ。
    Ashita, ikinari sekai isshū ryokō ni ikō ze.
    Let's just go on a trip around the world tomorrow.
  2. 陽葵 Himari

    健太、あなたは本当に狂っているわ。
    Kenta, anata wa hontō ni kurutte iru wa.
    Kenta, you are truly crazy.
  3. 健太 Kenta

    人生に刺激が必要だと思わないか?
    Jinsei ni shigeki ga hitsuyō da to omowanai ka?
    Don't you think life needs some excitement?
  4. 陽葵 Himari

    刺激のレベルが間違っているわよ。
    Shigeki no reberu ga machigatte iru wa yo.
    The level of excitement is all wrong.

Sources

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Freya Kirsty
Freya KirstyHelp make this guide better. Spot a mistake, know another way to say it, or have an example from real life? Share it below.
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