/mæd; mæd/
adj (-dder, -ddest)
1 (a) mentally ill; insane 疯的; （患）精神病的; 精神错乱的
*a mad person, act 精神失常的人、行为
* be/go mad 发疯
* drive/send sb mad 把某人逼疯.
(b) (infml esp derog 口, 尤作贬义) very foolish; crazy 极愚蠢的; 疯狂的
*What a mad thing to do! 多愚蠢的事啊!
* You must be mad to drive so fast! 你开得这样快, 简直疯了!
* He's quite mad
*he goes round in very odd clothes. 他真是疯了, 竟穿着稀奇古怪的衣服到处逛.
2 (infml 口)
(a) ~ about/on sth/sb very interested in sth/sb; enthusiastic about sth/sb 对某事物[某人]极感兴趣或很入迷
*mad on football, pop music, etc 对足球、流行歌曲等着迷
* He's mad about her, ie likes/loves her very much. 他爱她爱得如醉如痴.
(b) (following ns 用于名词之後) very keen on (sth/sb) 极喜爱（某事物[某人]）
*be cricket mad, photography mad, pop music mad, etc 酷爱板球、摄影、流行音乐等
* a crowd of football-mad little boys 一群迷恋足球运动的小男孩儿.
3 ~ (with sth) (infml 口) very excited; wild; frenzied 非常激动的; 狂暴的; 狂乱的
*a mad dash, rush, etc 乱冲、狂奔
* mad with pain 极疼痛
* The crowd is mad with excitement! 群众激动万分!
4 (infml 口) ~ (at/with sb) angry; furious 愤怒的; 狂怒的
*His obstinacy drives me mad! 他顽固不化把我气得火冒三丈!
* She was mad at/with him for losing the match. 她对他输了这场比赛极为恼怒.
* mad at/with the dog for eating her shoe （她）因狗咬她的鞋而发怒.
* Don't get mad (about the broken window). 别（为窗户坏了）大动肝火.
5 (of a dog) suffering from rabies （指狗）患狂犬病的.
6 (idm 习语) hopping mad => hop1. like `mad (infml 口) very much, quickly, etc 非常、极快地等
*smoke, run, work, etc like mad 拼命地吸烟、跑、工作等. (as) mad as a `hatter/a March `hare (infml 口) completely insane 像三月里（交尾期）野兔般疯狂. mad `keen (on sb/sth) (infml 口) very interested (in sb/sth) or enthusiastic (about sb/sth) （对某人[某事物]）极感兴趣或很入迷
*She's mad keen on hockey/on Arthur Higgins. 她极喜爱曲棍球[阿瑟·希金斯]. stark raving/staring mad => stark.

adj comparativemaddersuperlativemaddest

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1【angry】
2【crazy】
3【uncontrolled】
4 be mad about/for/on somebody/something
5【mentally ill】
6 like mad
7 don't go mad
8 power-mad/money-mad/sex-mad etc

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[Language: Old English;Origin: gemAd]
【ANGRY】 [not before noun]
informal especially AmE 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 withBrE
　His wife will be really mad with him.
go mad
BrE (=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)
【CRAZY】
especially BrE 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 recently!
　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)
【UNCONTROLLED】
especially BrE 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.
be mad about/for/on sb/sth
informal especially BrE 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 sth)
　'Did you enjoy the film?' 'I wasn't mad keen.'
be mad for it
(=want to do something very much)
【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
like madinformal
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.
don't go mad
BrE 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.
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