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Definition of blackout

blackout

/ˈblæk.aʊt/
black · out

Plural:blackouts
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blackout Lexical Profile

blackout Game Scores & Validity

• noun

1

A temporary loss of electrical power and lighting in a given area.

Example

"The severe thunderstorm caused a citywide blackout that lasted for several hours."


2

A sudden, temporary loss of consciousness, vision, or memory.

Example

"The patient experienced a brief blackout after standing up too quickly."


3

An official suppression or censorship of news, information, or broadcasting.

Example

"The authorities imposed a strict media blackout during the sensitive negotiations."


4

A mandatory extinguishing or concealment of all visible lights in a city or region as a precaution against nighttime air raids.

Example

"During the wartime blackout, residents hung heavy dark curtains over every window."

Synonyms
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Antonyms
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Word Nuance & Usage

The closed compound noun 'blackout' should be distinguished from the two-word phrasal verb 'black out' (meaning to lose consciousness or extinguish lights).

• Rhymes for blackout

Word Origin & Etymology

Coined in the early 20th century from the phrasal verb 'black out', originally referring to the sudden extinguishing of stage lights in a theater before being widely adopted during World War II for wartime air-raid precautions.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Blackout. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/blackout
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