noun \ˈmā-nē-ˌak\

: someone who is violent and mentally ill

: a person who behaves in a very wild way

: a person who is extremely enthusiastic about something

Full Definition of MANIAC

:  a person characterized by an inordinate or ungovernable enthusiasm for something

Examples of MANIAC

  1. He's a complete maniac when he's playing football.
  2. <they should permanently put away the maniac who is responsible for these kidnappings>

Origin of MANIAC

Late Latin maniacus maniacal, from Greek maniakos, from mania
First Known Use: circa 1763

Other Psychology Terms

fetish, hypochondria, intelligence, mania, narcissism, neurosis, pathological, psychosis, schadenfreude, subliminal


noun \ˈmā-nē-ˌak\   (Medical Dictionary)

Medical Definition of MANIAC

: an individual affected with or exhibiting insanity


Next Word in the Dictionary: maniacal
Previous Word in the Dictionary: mania
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