insane

adjective
UK: /ɪnˈseɪn/
US: /ɪnˈseɪn/

  1. Very silly or stupid.

    1. That's an insane idea; it will never work. [ ] [ ]
    2. Spending all our savings on a new car seems utterly insane to me. [ ] [ ]

  2. Seriously mentally ill.

    1. He acted insane and started yelling loudly. [ ] [ ]
    2. The judge ruled the defendant was insane at the time of the crime. [ ] [ ]

  3. Extremely angry.

    1. She was insane when she found out the truth. [ ] [ ]
    2. My boss was insane after I missed the project deadline last week. [ ] [ ]

Synonyms

lunatic absurd crazy wild foolish maniacal mad

Frequently Asked Questions

The word "insane" in English means: Very silly or stupid., Seriously mentally ill., Extremely angry..

The phonetic transcription of "insane" is /ɪnˈseɪn/ in British English and /ɪnˈseɪn/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "insane": lunatic, absurd, crazy, wild, foolish, maniacal, mad.

Example usage of "insane": "That's an insane idea; it will never work.". More examples on the page.