Mad

/mæd/

Meaning & Definition

noun
an irrational or insane person.
He was treated like a mad by the townspeople.
adjective
mentally ill; insane.
He was considered mad after his prolonged isolation.
extremely angry.
She was mad when she found out he had lied to her.
wildly excited or enthusiastic.
The crowd went mad when their team scored the winning goal.
crazy or ridiculous.
It was a mad idea to go hiking in the storm.

Etymology

Middle English 'madde', meaning crazy or insane.

Common Phrases and Expressions

mad as a hatter
Completely crazy.
mad about something
Very enthusiastic or passionate about something.
mad at someone
Angry with a person.
mad house
A very chaotic or disorderly place.
madly in love
Extremely in love.

Related Words

madness
The state of being mad; insanity.
madcap
Recklessly adventurous or silly.
madly
In a mad manner; wildly.

Slang Meanings

Very angry.
I was so mad when I heard what he did.
Exciting or crazy in a good way.
That concert was mad! I loved it.
Used to describe something intense or awesome.
That movie was mad sick!