Longman Dictionary of Contemporary English homepage

Language: Old English
Origin: gemæd

mad

 adjective
     
mad S2 W3 comparative madder, superlative maddest
1

angry

[not before noun] informal especially American English angry
mad at
Are you still mad at me?
We get mad at each other sometimes, like any family.
mad about
There's no need to get mad about it!
You make make me so mad!
mad with British English
His wife will be really mad with him.
go mad British English (=become very angry)
Look at this mess! Mum will go mad!
hopping mad (=very angry)
(as) mad as hell (=a rude way of saying very angry)
2

crazy

especially British English crazy or very silly:
He can't possibly get that finished in time. He must be mad!
I'd go mad (=start to feel crazy) if I was stuck at home all day.
He's been driving me mad!
You've agreed to marry him! Are you mad?
Surely no one would be mad enough to fly in this weather?
My friends all think I'm stark raving mad (=completely crazy).
It's enough to send you barking mad (=completely crazy).
as mad as a hatter/March hare (=completely crazy)
3

uncontrolled

especially British English behaving in a wild uncontrolled way, without thinking about what you are doing
mad dash/rush/panic etc
We all made a mad dash for the door.
mad with grief/fear/jealousy etc
When she heard of her son's death, she was mad with grief.
When Italy scored, the crowd went mad (=became very excited).
We went a bit mad (=spent a lot of money) and ordered champagne.
4

be mad about/for/on somebody/something

informal especially British English to like someone or something very much [= crazy]:
My nine-year-old is mad about Robbie Williams.
He's mad about computer games.
All the girls at school are mad for him.
be mad keen (on something)
'Did you enjoy the film?' 'I wasn't mad keen.'
be mad for it (=want to do something very much)
5

mentally ill

especially British English old-fashioned informal mentally ill [= insane]:
Mr Rochester's mad wife
He turned towards me with a mad look in his eyes.
the cartoon figure of the mad scientist
6

like mad

informal very much, very quickly, or with a lot of energy:
I caught my thumb in the door and it hurt like mad.
She ran like mad to catch the bus.
7

don't go mad

British English spoken used to tell someone not to work too hard, get too excited, or spend too much money:
I know you've got a lot to do but don't go mad.
8

power-mad/money-mad/sex-mad etc

only interested in having power, money etc and doing everything possible to get it:
a power-mad dictator
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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