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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.

See Examples For:

He previously told The Times his epiphany came during a road trip in 1979, when he rescued a stray black dog in apparent distress in the Angeles National Forest.

From Los Angeles Times Mar. 4, 2026

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

She flicked her hand at the black dog Hecuba.

From "The House of Hades" by Rick Riordan

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