lunacy

/'lu:nəsi/
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lunacy

The full moon is often associated with lunacy in old stories.

Definition
  1. Noun:
    • Foolish or senseless behavior: Refers to actions or ideas that are extremely unwise, irrational, or lacking in common sense.
    • (Obsolete) Legal insanity: An archaic term historically used in law to describe a state of mind that renders a person not legally responsible for their actions.
Usage Examples
  • Noun:
    • It would be sheer lunacy to invest all your money in such a risky venture.
    • The old law books sometimes referred to the defendant's condition as lunacy.
Advanced Usage
  • "A moment of lunacy": a brief instance of extremely foolish judgment or action.
    • In a moment of lunacy, he quit his stable job without another one lined up.
Variants and Related Words
  • Lunatic (noun/adj): A person who is mentally ill (archaic/offensive) or behaves in an extremely foolish way; wildly foolish.
    • He was driving like a lunatic. (Here, it means a very reckless or foolish driver).
Synonyms
  • Folly: The state or quality of being foolish; lack of good sense.
  • Insanity: Extreme foolishness or irrationality (in informal use); the state of being seriously mentally ill.
  • Madness: Wild or foolish behavior; the state of having a serious mental illness.
Idioms and Phrases
  • "The lunatics are running the asylum": A saying used to criticize a situation where the people in charge are the ones least capable of sensible or rational leadership.
    • With that chaotic management decision, it feels like the lunatics are running the asylum.
lunacy

The full moon is often associated with lunacy in old stories.

Noun
  1. foolish or senseless behavior
  2. obsolete terms for legal insanity