Madman

/ˈmæd.mæn/

Meaning & Definition

noun
A person who is mentally ill or behaves in a crazy or unpredictable manner.
The town was afraid of the madman who roamed the streets at night.
A person who acts in a wildly eccentric or unreasonable way.
He was considered a madman for his radical ideas about changing the world.
A man who is insane or exhibiting extreme and irrational behavior.
The madman ranted about conspiracies that made no sense to anyone else.

Etymology

The word 'madman' comes from 'mad' meaning 'insane' and 'man', literally meaning 'insane man'.

Common Phrases and Expressions

madman in the attic
A reference to someone who is socially atypical or mentally unstable.
madman with a plan
A person who appears crazy but has a detailed strategy.

Related Words

madness
The state of being mad or insane.
mania
An excessive enthusiasm or desire; an obsession.
frenzy
Wild and uncontrolled behavior or activity.

Slang Meanings

A person who is perceived as acting irrationally in a humorous way.
He's such a madman when he gets excited about the game!
An eccentric individual who defies social norms.
You can call him a madman, but his art is truly unique.