mad as a fish

English

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Adjective

mad as a fish (not comparable)

1. (slang) Demented, crazy.
   • 2006, Damon Hammond, Totally Steaming: A Year on HMS Fearless, page 202:

     Voluble, almost incomprehensible, mad as a fish and perpetually drunk.

   • 2006, Lou Bellamy, Haunting the Dead, page 38:

     The only one I'm scared of is that Eliza Cooper. Mad as a fish that one.

   • 2007, Charles Stross, The Jennifer Morgue:

     I've got a station chief who's as mad as a fish, an incomplete briefing, and a gambling-obsessed billionaire to out-bluff.

   • 2008, Andy Taylor, Wild Boy: My Life in Duran Duran:

     Sean, the older brother, was as mad as a fish, but he was also the one with the brains and together they were a very entrepreneurial family.