Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “lunacy”

See all translations

lunacy

noun [U] uk   /ˈluː.nə.sɪ/ us  
stupid behaviour that will have bad results: It would be lunacy to try to climb the mountain in this weather. It was sheer lunacy spending all that money. old-fashioned mental illness
Translations of “lunacy”
in Korean 바보짓…
in Arabic جُنون…
in French folie…
in Turkish delilik, kaçıklık, çılgınlık…
in Italian follia, pazzia…
in Chinese (Traditional) 愚蠢的行為,不明智的舉動, 精神病,精神錯亂…
in Russian безрассудство…
in Polish szaleństwo…
in Spanish locura…
in Portuguese loucura…
in German der Wahnsinn…
in Catalan bogeria…
in Japanese 愚行…
in Chinese (Simplified) 愚蠢的行为,不明智的举动, 精神病,精神错乱…
(Definition of lunacy from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of lunacy?
Add Cambridge dictionaries to your browser to your website

Definitions of “lunacy” in other dictionaries

Word of the Day

ellipsis

a situation in which words are left out of a sentence but the sentence can still be understood

Word of the Day

Euphemisms (Words used to Avoid Offending People)

by Kate Woodford,
March 04, 2015
​​​ We recently looked at the language that we use to describe lies and lying. One area of lying that we considered was ‘being slightly dishonest, or not speaking the complete truth’. One reason for not speaking the complete truth is to avoid saying something that might upset or offend people. Words and

Read More 

snapchat verb

March 02, 2015
to send someone a message using the photomessaging application Snapchat We used to have a thing until he got a girlfriend. now

Read More