lunacy
lu|na|cy /l'uːnəsi/
1 [N-UNCOUNT]
If you describe someone's behaviour as lunacy, you mean that it seems very strange or foolish.
...the lunacy of the tax system...
It remains lunacy to produce yet more coal to add to power stations' stockpiles.
2 [N-UNCOUNT]
Lunacy is severe mental illness. (OLD-FASHIONED)
1 [N-UNCOUNT]
If you describe someone's behaviour as lunacy, you mean that it seems very strange or foolish.
...the lunacy of the tax system...
It remains lunacy to produce yet more coal to add to power stations' stockpiles.
2 [N-UNCOUNT]
Lunacy is severe mental illness. (OLD-FASHIONED)