lunacy
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About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.lu·na·cy
noun \ˈlü-nə-sē\ plural lu·na·cies
Definition of LUNACY
1
a : insanity b : intermittent insanity once believed to be related to phases of the moon
2
: wild foolishness : extravagant folly
3
: a foolish act
See Examples of LUNACY
- Quitting her job was lunacy.
- His idea was considered total lunacy.
Origin of LUNACY
lunatic
First Known Use: 1541
Related to LUNACY
Other Psychology Terms
lu·na·cy
noun \ˈlü-nə-sē\ (Medical Dictionary)plural lu·na·cies
Medical Definition of LUNACY
: insanity; also : intermittent insanity once believed to be related to phases of the moon
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