[ˈmeɪnɪak], (Noun)

Definitions:
- a person exhibiting extremely wild or violent behaviour
(e.g: when he sits in front of a PlayStation he transforms into a karate-chopping maniac)

- a person suffering from mania


Phrases:

Origin:
early 16th century (as an adjective): via French from late Latin maniacus, from mania (see mania)