Lunacy

Pronunciation

• UK IPA: /ˈluː.nÉ™.si /, /ˈljuː.nÉ™.si/
• US IPA: /ˈluː.nÉ™.si /

Origin

From lunatic + -cy.

Full definition of lunacy

Noun

1. (of a person or group of people) The state of being mad, insanity
1. a cyclical mental disease, apparently linked to the lunar phases
2. insanity implying legal irresponsibility.
2. Something deeply misguided.

Synonyms

• (state of being mad) insanity

Derived terms

• lunatic