Lunacy Definition

lo͝onə-sē
lunacies
noun
lunacies
Mental unsoundness; insanity.
Webster's New World
Intermittent insanity, formerly supposed to change in intensity with the phases of the moon.
Webster's New World
Great or wild foolishness.
A policy that proved to be a piece of economic lunacy.
American Heritage
Great folly or a foolish act.
Webster's New World

Something deeply misguided.

Wiktionary
Antonyms:

Other Word Forms of Lunacy

Noun

Singular:
lunacy
Plural:
lunacies

Origin of Lunacy

  • From lunatic + -cy.

    From Wiktionary

  • From lunatic

    From American Heritage Dictionary of the English Language, 5th Edition

Lunacy Is Also Mentioned In

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lunacy