noun
- the state or quality of being insane; madness or extreme foolishness
Usage: rare; formal alternative to ‘insanity’
Examples
- The insaneness of his plan became apparent when it failed spectacularly.
- She questioned the insaneness of spending so much money on unnecessary items.
- The court had to determine the defendant’s insaneness at the time of the crime.
- His friends were concerned about the growing insaneness of his behavior.
- The insaneness of the situation left everyone speechless.