lunatic Hear it!

lunatic definition

lu·na·tic (lo̵̅o̅′nə tik)

adjective

  1. suffering from lunacy; insane
  2. of or characterized by lunacy
  3. of or for insane persons
  4. utterly foolish

Etymology: ME lunatik < OFr lunatique < LL lunaticus, moon-struck, crazy < L luna, the moon: see light

noun

an insane person

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