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

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


Seen and Heard

What made you want to look up mad as a hatter? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

conspicuously offensive

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!