The meaning of MANIAC is someone who is or acts mentally unsound; especially : a person who behaves in a wildly foolish, reckless, or dangerous manner. How to use maniac in a sentence.

Maniac is an American psychological black comedy drama television miniseries that premiered on Netflix on September 21, 2018, after being announced in 2016.

Maniac is a story about friendship, about family - about the connections we have to one another. It's a story about love. And one that we all should hear.

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 …

1. A psychotic or otherwise mentally ill person who exhibits violent or bizarre behavior. Not used in psychiatric diagnosis. 2. A person who has an excessive enthusiasm or desire for something: …

MANIAC definition: a raving or violently insane person; lunatic. See examples of maniac used in a sentence.

If you describe someone's behaviour as maniac, you are emphasizing that it is extremely foolish and uncontrolled.