- 1(informal) a person who behaves in an extremely dangerous, wild, or stupid way synonym madman He was driving like a maniac.
Definitions on the go
Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app.
- 2a person who has an extremely strong desire or enthusiasm for something, to an extent that other people think is not normal synonym fanatic
- 3(psychology) a person suffering from mania a homicidal maniac
a maniac driver/fan/killerSee maniac in the Oxford Advanced Learner's Dictionary
Check pronunciation: maniac