Definition of brighten in English:

brighten

Syllabification: bright·en
Pronunciation: /ˈbrītn
 
/

verb

  • 1Make or become more light: [no object]: the day began to brighten in the east [with object]: the fire began to blaze fiercely, brightening the room
    More example sentences
    • This will ensure that natural light can enter and brighten up your rooms.
    • And in this ordinary day, the sun suddenly begins to brighten up the blue skies.
    • The other members quickly agreed, and the light in the room began to brighten.
    Synonyms
    illuminate, light up, lighten, make bright, make brighter, cast/shed light on
    formal illume
  • 1.1 [with object] Make (something) more attractively and cheerfully colorful: this colorful hanging ornament will brighten any room daffodils brighten up many gardens and parks
    More example sentences
    • A host of colourful balloons brighten the skies over Canberra during the week-long festival.
    • Only the edge of the canvas is brightened by colour.
    • They arrived, a swirl of colour, brightening this black and white movie that silenced our lives.
  • 1.2Make or become happier and more cheerful: [no object]: Sarah brightened up considerably as she thought of Emily’s words [with object]: she seems to brighten his life
    More example sentences
    • Maybe, to brighten up, all this school needs is a bit more poetry.
    • A breath of fresh air, a quick lunch-hour walk or an office with a window all seem to brighten up our day.
    • Here's a story of mischief and mayhem to brighten up your Monday morning lecture.
    Synonyms
    cheer up, perk up, rally; be enlivened, feel heartened, be uplifted, be encouraged, take heart
    informal buck up, pep up

Origin

Old English (ge)beorhtnian.

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