lunatic

play
adjective lu·na·tic \ˈlü-nə-ˌtik\

Definition of lunatic

  1. 1 dated a :  affected with a severely disordered state of mind :  insaneb :  designed for the care of mentally ill people a lunatic asylum

  2. 2 :  wildly foolish a lunatic idea lunatic behavior

lunatic

noun

Examples of lunatic in a sentence

  1. He hatched a lunatic plot to overthrow the government.

  2. another of his lunatic ideas

Origin and Etymology of lunatic

Middle English lunatik, from Anglo-French or Late Latin; Anglo-French lunatic, from Late Latin lunaticus, from Latin luna; from the belief that lunacy fluctuated with the phases of the moon


First Known Use: 14th century


LUNATIC Defined for Kids

1

lunatic

play
adjective lu·na·tic \ˈlü-nə-ˌtik\

Definition of lunatic for Students

  1. :  insane 1


2

lunatic

play
noun lu·na·tic

Definition of lunatic for Students

  1. 1 :  an insane person

  2. 2 :  a person who behaves very foolishly That lunatic went through a red light.


Medical Dictionary

lunatic

noun lu·na·tic

Medical Definition of lunatic

  1. :  an individual marked by a severely disordered state of mind


Law Dictionary

lunatic

noun lu·na·tic \ˈlü-nə-tik\

Legal Definition of lunatic

  1. :  an insane person —used especially formerly

lunatic

adjective


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holding stubbornly to a belief or view

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