Definition of brighten in English:

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Pronunciation: /ˈbrītn/


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.
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.
cheer up, perk up, rally;
be enlivened, feel heartened, be uplifted, be encouraged, take heart
informal buck up, pep up


Old English (ge)beorhtnian.

Words that rhyme with brighten

Blyton, Brighton, Crichton, enlighten, frighten, heighten, lighten, righten, tighten, titan, triton, whiten

For editors and proofreaders

Syllabification: bright·en

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