[ˈmadnəs], (Noun)

Definitions:
- extremely foolish, irrational, or reckless behaviour
(e.g: it is madness to allow children to roam around after dark)

- the state of having a serious mental health condition (not in technical use)
(e.g: in his madness he destroyed the work of years)


Phrases:

Origin:
late Middle English: from mad + -ness