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mad - definition and synonyms

 
 
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adjective     mad pronunciation in American English
/mæd/
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adjectivemad
comparativemadder
superlativemaddest
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  1. 1
    [never before noun] informal angry

    He makes me mad, the way he keeps criticizing me.

    mad at/with:

    My boss is mad at me for missing the meeting.

  2. 2
    mainly British very silly or stupid
    be mad to do something:

    You’re mad to spend so much money on clothes.

    1. a.
      informal tending to behave in a strange way that other people sometimes consider funny

      a mad scientist

    2. b.
      offensive an offensive way for describing someone who is mentally ill

      She was completely mad.

  3. 3
    done quickly or without thinking, in a way that is badly organized

    There were people everywhere – it was all a bit mad!

  4. From our crowdsourced Open Dictionary
    4
    mad as a wet hen extremely angry

    Mom will be mad as a wet hen if we don't get home soon.

    Submitted by Monnshine on 27/07/2015
  5. From our crowdsourced Open Dictionary
    5
    mad as a March hare completely crazy; irrational

    The young fellow is as mad as a March hare.

    Submitted from United Kingdom on 06/11/2015
  6. From our crowdsourced Open Dictionary
    6
    (as) mad as hell a rude phrase meaning "extremely angry"

    Your dad will be as mad as hell when he finds out you took his car.

    I will be mad as hell if he gets here late.

    Submitted by Caleb Judy from United States on 17/12/2015
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in competitive cycling, the illegal use of motors on bikes in order to gain advantage over other riders

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unhappen

be reversed; be as if it had never happened

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