Dictionary.com
Thesaurus.com
Synonyms

black out

Idioms  
  1. Obliterate with black, as in crossing out words on a page or print on a screen. For example, They have blacked out all the obscene words in the subtitles to make this movie suitable for youngsters . This usage may be derived from an earlier meaning, “to stain or defame,” which dates from the 15th century (and probably alludes to “blackening” a person's reputation). [Mid-1800s]

  2. Extinguish all lights. For example, The whole town was asleep, as blacked out as London during the war . In the early 1900s this expression alluded to the lights in a theater, but from about 1940 on it meant darkening an entire city to hide it from enemy bombers.

  3. Lose consciousness, faint; also, experience a temporary loss of memory. For example, I couldn't remember a single note of the music; I blacked out completely , or The accused man claims he blacked out after his first drink . This usage is thought to have originated with pilots, who sometimes fainted briefly when pulling out of a power dive. It soon was transferred to other losses of consciousness or memory. [c. 1940]


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.

As CBS reported, “Many of the documents contained significant redactions, including whole pages of records that were blacked out.”

From Salon

More than 100 pages in one file related to a grand jury investigation are entirely blacked out.

From BBC

Just last month, Disney blacked out Monday Night Football for YouTube TV subscribers over a fee dispute that lasted weeks, while urging consumers to switch to its own streaming platform, ESPN+.

From MarketWatch

I feel like I might black out, and then I notice Jonesy’s hand on my shoulder.

From Literature

When I first started performing, I would just black out and do the performance.

From Los Angeles Times