Meaning of lunatic in English

1. Pronunciation

   /ˈlunəˌtɪk/

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1. Classifying Adjective

   lunatic

   Definitions

   1. insane and believed to be affected by the phases of the moon

   Synonyms

   • insane

2. Noun

   lunatic

   Etymology

   Middle English: from Old French lunatique, from late Latin lunaticus, from Latin luna‘moon’ (from the belief that changes of the moon caused intermittent insanity)

   Definitions

   1. an insane person
3. 2. a reckless impetuous irresponsible person