maniac
🇺🇸
/ˈmeɪniæk/
🇬🇧
/ˈmeɪniæk/
acting very wildly, dangerously, or crazily
The driver was speeding like a maniac.
someone who acts in a wildly dangerous or crazy way
He was driving like a maniac.
a person who is extremely passionate about something to a level others find odd
I buy so many shoes because I am a shopping maniac.
a person who suffers from serious mental illness
In old movies, castles sometimes had a hidden room for a maniac.