A person who behaves in a wildly foolish, reckless, or dangerous manner A raving or violently insane person How to use maniac in a sentence.
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In maniac, a paranoid schizophrenic and a depressed woman join a very weird experimental program designed to cure mental illness for good using drugs and computers.
Maniac noun [c] (person with mental illness) a person who seems unable to control his or her behavior and may commit violent acts A homicidal maniac (definition of maniac from the cambridge academic content dictionary © cambridge university press) Maniac is an american psychological black comedy drama television miniseries that premiered on netflix on september 21, 2018, after being announced in 2016. A psychotic or otherwise mentally ill person who exhibits violent or bizarre behavior
Not used in psychiatric diagnosis A person who has an excessive enthusiasm or desire for something A person who acts in a wildly irresponsible way If you describe someone's behaviour as maniac, you are emphasizing that it is extremely foolish and uncontrolled.
Maniac (from greek μανιακός, maniakos) is a pejorative for an individual who experiences the mood known as mania
In common usage, it is also an insult for someone involved in reckless behavior.