Definition of maniac in English:

maniac

Line breaks: ma¦niac
Pronunciation: /ˈmeɪnɪak
 
/

noun

1A person exhibiting extremely wild or violent behaviour: when he sits in front of a PlayStation he transforms into a karate-choppin' maniac
More example sentences
  • He is not a homicidal maniac, but a violent, evil man made even more so by his addiction to unnamed drugs.
  • I lost several pounds and I looked like a maniac.
  • The driver was screaming like a maniac at this stage.
1.1 [with adjective or noun modifier] informal An obsessive enthusiast: a religious maniac
More example sentences
  • I just don't think at any stage they are going to be able to make a credible case that he is some sort of right-wing maniac.
  • A night of petrol-fuelled hedonism is in store at Wimbledon Greyhound Stadium on Sunday where motor maniacs can admire a human canon ball, a monster truck, fire stunts and car crashes.
  • This was one for the war buffs amongst the motoring maniacs.
Synonyms
1.2 Psychiatry, archaic A person suffering from mania.
Synonyms
lunatic, madman, madwoman, mad person, deranged person, psychopath, psychotic
Scottish informal radge
North American informal crazy, kook, meshuggener, nutso
US informal wing nut

Origin

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

Derivatives

maniacal

Pronunciation: /məˈnʌɪək(ə)l/
adjective
More example sentences
  • And they didn't do so out of some maniacal drive to accumulate a big pile of cash.
  • He glared at me with his fishy-looking eyes and flashed me a maniacal grin, showing all his yellow teeth.
  • Despite its proven stress-relieving effect, I will not indulge in maniacal laughter.

maniacally

Pronunciation: /məˈnʌɪək(ə)li/
adverb
More example sentences
  • The kitchen table is an unruly heap of evidence as Jordan, maniacally smoking, tells her sprawling story.
  • He ran around laughing maniacally when I told him to do things.
  • In the event that neither is true, feel free to laugh maniacally at me.

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