blackout

Fetched 2026-10-26 (cache).

Synonyms: black out, black-out, blockout, blankout, backout, blank out, block out, back out, blackhat, blackouts, blackmur

Antonyms: black out, black-out, blockout, blankout, backout, blank out, block out, back out, blackhat, blackouts, blackmur

Related words from Datamuse; suggestions, not definitions.

Noun

1. A [[temporary]] [[loss]] of [[consciousness]].
2. A [[temporary]] [[loss]] of [[memory]].
3. A [[large-scale]] [[power]] [[failure]], and resulting [[loss]] of [[electricity]] to [[consumer]]s.
4. An instance of [[censorship]], especially a [[temporary]] one.
5. {{lb|en|internet}} An intentional outage of a website or other online service, typically as a form of protest.
6. {{lb|en|historical}} The [[mandatory]] [[block]]ing of all [[light]] [[emanate|emanating]] from [[building]]s, as well as [[outdoor]] and [[street]] lighting as a measure against [[aerial]] [[bomb]]ing or [[naval]] [[attack]], as [[impose]]d during, e.g., [[World War II]].
7. {{lb|en|attributive}} The [[block]]ing out of as much [[light]] as possible.
8. {{lb|en|slang|criminology|rare}} A [[mass murder]] committed, usually in an urban area, to eliminate potential witnesses of a previous crime.

Verb

1. {{lb|en|nonstandard}} {{altform|en|black out}}.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.