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mad - definition and synonyms


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adjective mad pronunciation in American English /mæd/
Word Forms
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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
    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

sea lion

in an online conversation, repeatedly asking a person questions which suggest that you are interested in what they are talking about, but are actually intended to annoy them

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