lunacy

Witlessness is a related term of lunacy.

As nouns the difference between witlessness and lunacy

is that witlessness is the state of being witless; stupidity while lunacy is (of a person or group of people) the state of being mad, insanity.

Senselessness is a related term of lunacy.

As nouns the difference between senselessness and lunacy

is that senselessness is the state of being senseless; unsense while lunacy is (of a person or group of people) the state of being mad, insanity.

Childishness is a related term of lunacy.

As nouns the difference between childishness and lunacy

is that childishness is (uncountable) the state or characteristic of being childish while lunacy is (of a person or group of people) the state of being mad, insanity.

Brainlessness is a related term of lunacy.

As nouns the difference between brainlessness and lunacy

is that brainlessness is the state or condition of being brainless while lunacy is (of a person or group of people) the state of being mad, insanity.

Indiscretion is a related term of lunacy.

As nouns the difference between indiscretion and lunacy

is that indiscretion is indiscretion while lunacy is (of a person or group of people) the state of being mad, insanity.

As a noun lunacy is

(of a person or group of people) the state of being mad, insanity.

As nouns the difference between extravagance and lunacy

is that extravagance is excessive or superfluous expenditure of money while lunacy is the state of being mad, insanity.

Lunacy is a synonym of imbecility.

As nouns the difference between lunacy and imbecility

is that lunacy is (of a person or group of people) the state of being mad, insanity while imbecility is the quality of being imbecile; weakness; feebleness, especially of mind.

As nouns the difference between idiocy and lunacy

is that idiocy is the state or condition of being an idiot; the quality of having an intelligence level far below average; mental retardation while lunacy is the state of being mad, insanity.

Imprudence is a related term of lunacy.

As nouns the difference between imprudence and lunacy

is that imprudence is (uncountable) the quality or state of being imprudent; want of prudence, caution, discretion or circumspection; indiscretion; inconsideration; rashness; heedlessness while lunacy is (of a person or group of people) the state of being mad, insanity.