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black dog

American  

noun

Informal.
  1. melancholy; despondency; the blues.

    The black dog is over him.


black dog British  

noun

  1. informal depression or melancholy

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of black dog

First recorded in 1700–10

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

She said the black dog "came running towards them".

From BBC • Mar. 6, 2025

He sat in a loud, gas-guzzling Jeep Cherokee with a hyper black dog panting in the back.

From New York Times • Oct. 9, 2022

When the black dog, as Winston Churchill called his depression, nipped at his heels, Buchwald turned to humor, “the greatest defense in the world.”

From Washington Post • Sep. 9, 2022

The common belief is that the game was named after the Pritchards’ dog “Pickles” — a small, fluffy black dog — and that the ball happened to belong to Pickles.

From Seattle Times • Sep. 4, 2022

Sirius grasped his hand briefly, nodded to Dumbledore, transformed again into the black dog, and ran the length of the room to the door, whose handle he turned with a paw.

From "Harry Potter And The Goblet Of Fire" by J. K. Rowling

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