Madness | Mean of madness in English Dictionary

/ˈmædnəs/

• Noun
• a state of severe mental illness
1. The king's madness [=insanity] was well-known.
2. He suffered a series of tragedies that nearly drove him to madness.
• behavior or thinking that is very foolish or dangerous
1. Her friends told her the idea was pure/sheer madness, but she went through with it anyway.
2. It was the height of madness for him to drive at such high speeds!