(~s)
1.
If you describe someone as a ~, you think they behave in a dangerous, stupid, or annoying way. (INFORMAL)
Her son thinks she’s an absolute raving ~.
N-COUNT disapproval
2.
If you describe someone’s behaviour or ideas as ~, you think they are very foolish and possibly dangerous.
...the operation of the market taken to ~ extremes.
...a country spurned until now by all except the more ~ of journalists and adventurers.
= mad, insane
ADJ disapproval
3.
If you describe a place or situation as ~, you mean that it is confused and seems out of control.
He pleads for sanity in a ~ world.
ADJ: ADJ n
4.
People who were mentally ill used to be called ~s. (OLD-FASHIONED)
N-COUNT