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1. Dictionary

   Ma·ni·ac

   /ˈmānēˌak/

   

   noun

   • 1. a person exhibiting extreme symptoms of wild behavior, especially when violent and dangerous: "a homicidal maniac"
   • ▪ an obsessive enthusiast: informal "a gambling maniac" Similar enthusiastfanaddictdevoteeaficionadoinformal:freakfiendnutbuff
   • 2. a person suffering from mania. archaic Similar lunaticmadmanmadwomanmad personderanged personpsychopathpsychoticinformal:loonyfruitcakenutnutcasenutjobcuckoopsychoscrewballhead caseheadbangersickonutterradgecrazykookmeshuggenernutsowing nut

   Word Origin early 16th century (as an adjective): via late Latin from late Greek maniakos, from mania (see mania).

   Scrabble Points: 10

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2. www.vocabulary.com › dictionary › maniacManiac - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › maniac

   IPA guide. A maniac is a crazy person. Screaming like a maniac is never a good way to get your point across. Long ago, the word maniac was an official psychiatric term that meant "a patient suffering from mania," or manic disorder, involving a euphoric mood and extreme energy.

3. www.collinsdictionary.com › dictionary › englishMANIAC definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   4 days ago · noun. 1. a wild disorderly person. 2. a person who has a great craving or enthusiasm for something. a football maniac. 3. psychiatry obsolete. a person who experiences mania. Collins English Dictionary.

4. www.thefreedictionary.com › maniacManiac - definition of maniac by The Free Dictionary

   www.thefreedictionary.com › maniac

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   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: a sports maniac. 3. A person who acts in a wildly irresponsible way: maniacs on the highway. adj. Variant of maniacal.

5. www.oxfordlearnersdictionaries.com › definition › englishmaniac adjective - Definition, pictures, pronunciation and ...

   www.oxfordlearnersdictionaries.com › definition › english

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   Definition of maniac adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

6. www.yourdictionary.com › maniacManiac Definition & Meaning | YourDictionary

   www.yourdictionary.com › maniac

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   noun. maniacs. A psychotic or otherwise mentally ill person who exhibits violent or bizarre behavior. Not used in psychiatric diagnosis. American Heritage. A person who has an excessive or persistent enthusiasm, liking, or desire for something. A football maniac. Webster's New World. Similar definitions.

7. www.oed.com › dictionary › maniac_adjmaniac, adj. & n. meanings, etymology and more | Oxford ...

   www.oed.com › dictionary › maniac_adj

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   maniac adjective noun. Meaning & use. 1. 2. adjective. 1.a. 1526–. Of, relating to, or characterized by mania; belonging to or characteristic of a maniac. 1526. They that vseth it to moche comynly fall in the manyake passyon. Grete Herball cvii. sig. Giii/1. 1728. I..us'd Camphire in Maniac Disorders.

8. www.britannica.com › dictionary › maniacManiac Definition & Meaning | Britannica Dictionary

   www.britannica.com › dictionary › maniac

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   1. : someone who is violent and mentally ill. The movie he rented was about a maniac [= madman, lunatic] who goes on a murderous rampage. a homicidal maniac. 2. informal : a person who behaves in a very wild way. He's a complete maniac when he's playing football.