i Register
In some senses, maniac is marked as figuratively. Watch for register when choosing this word.
maniac
UK /ˈmeɪ.niˌæk/ US /ˈmeɪ.niˌæk/
noun 3
Definitions
noun
1
An insane person, especially one who suffers from a mania.
She was driving like a maniac.
In these early days of silent pictures, the accent was chiefly on thrills and danger as provided by supposedly unstoppable locomotives with crooks or maniacs on the footplate.
2
A fanatic, a person with an obsession.
He's a manga maniac.
She's a maniac, maniac on the floor / And she's dancing like she's never danced before
3
Ellipsis of sex maniac.
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