maniac
noun
[ ˈmeɪnɪak ]
• a person exhibiting extremely wild or violent behaviour.
• "when he sits in front of a PlayStation he transforms into a karate-choppin' maniac"
Origin:
early 16th century (as an adjective): via late Latin from late Greek maniakos, from mania (see mania).
-maniac
combining form
• forming nouns corresponding to words ending in -mania.
• "kleptomaniac"
