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Synonyms

twilight zone

American  

noun

  1. the lowest level of the ocean that light can reach.

  2. an ill-defined area between two distinct conditions, categories, etc., usually comprising certain features of both; an indefinite boundary.

    a twilight zone between fantasy and reality.


twilight zone British  

noun

  1. any indefinite or transitional condition or area

  2. an area of a city or town, usually surrounding the central business district, where houses have become dilapidated

  3. the lowest level of the ocean to which light can penetrate

"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 twilight zone

First recorded in 1905–10

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:

And that twilight zone has serious costs—a fact that Thomas ignores but Jackson rightly highlights.

From Slate Jun. 23, 2026

"It almost felt like being in the twilight zone," he added.

From BBC Feb. 23, 2026

Together, the findings highlight how overlooked species in the ocean's twilight zone play an outsized role in shaping marine food webs and the behavior of some of the ocean's largest predators.

From Science Daily Dec. 28, 2025

But Cochran would later describe the case as “a twilight zone of deceit, dishonesty, betrayal and official corruption.”

From Los Angeles Times Jun. 28, 2025

Dimple felt like she was in the twilight zone.

From "When Dimple Met Rishi" by Sandhya Menon

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