craziness

Craziness, n.

1. The state of being broken down or weakened; as, the craziness of a ship, or of the limbs.

2. The state of being broken in mind; imbecility or weakness of intellect; derangement.

Shades of meaning

Fernald has no entry of its own for craziness; he lists it under insanity.

Where he writes about it:

Craziness is a vague popular term for any sort of disordered mental action, or for conduct suggesting it. — from insanity