Lunacy definition
An example of lunacy is college students and intense partying over Spring break.
A policy that proved to be a piece of economic lunacy.
- A cyclical mental disease, apparently linked to the lunar phases.
- Insanity implying legal irresponsibility.
Other Word Forms
Noun
Origin of lunacy
- From lunatic
From American Heritage Dictionary of the English Language, 5th Edition
- From lunatic + -cy.
From Wiktionary