Did you know?

Click any word in a definition or example to find the entry for that word

black out

 - definition
Close

What are red words?

90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.

Close

Thesaurus

The thesaurus of synonyms and related words is fully integrated into the dictionary entries. Click on the T button in an entry to review the synonyms and related words for that meaning.

more
phrasal verb
Word Forms
Close
present tense
I/you/we/theyblack out
he/she/itblacks out
present participleblacking out
past tenseblacked out
past participleblacked out
  1. 1
    [intransitive] to suddenly become unconscious

    He had blacked out as his car hit the tree.

  2. 2
    [transitive] to prevent someone from reading or seeing something by covering it with something dark

    Half the pages in the report had been blacked out for security reasons.

See also main entry: black

food rave

a very large party where people eat, sell or share many different types of food, usually held outside or in a large public building

BuzzWord Article

Word of the Day

grungy

dirty and sometimes untidy or smelling bad

Open Dictionary

dead white (European) male

a man … whose achievements may have been overestimated because he belonged to the gender and ethnic group … that was dominant at the time

add a word

Blog

A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog