mad as a hatter

Definition of mad as a hatter

informal + old-fashioned

  1. :  severely mentally ill :  crazy He's a nice fellow, but mad as a hatter.

Word by Word Definitions

  1. :  completely unrestrained by reason and judgment :  unable to think in a clear or sensible way

    :  incapable of being explained or accounted for

    :  carried away by intense anger :  very angry :  furious

  1. :  madden

  1. :  a fit or mood of bad temper

    :  anger, fury

  1. :  one that makes, sells, or cleans and repairs hats

Seen and Heard

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clearly seen through or understood

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