lunatic

ˈlü-nə-ˌtik 3 syllables uncommon

  1. noun. someone affected with a severely disordered state of mind

  2. noun. a person who behaves in a wildly foolish, reckless, or uncontrolled manner

  3. adjective. affected with a severely disordered state of mind

    • a lunatic asylum
    • a lunatic idea

  4. adjective. providing care to mentally ill people

    • lunatic behavior

  5. adjective. wildly foolish

Source

Origin

Middle English lunatik, borrowed from Anglo-French lunatic, borrowed from Late Latin lūnāticus, noun derivative of Latin lūnāticus "suffering from a mental or neurological disorder allegedly affected by the phases of the moon".

Related Words

7-Letter Words
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Noun
2025