brightness
noun
bright·ness ˈbrīt-nəs 
1
a
: the quality or state of being bright
also : an instance of such a quality or state
b
: luminance
2
: the attribute of light-source colors by which emitted light is ordered continuously from light to dark in correlation with its intensity compare hue sense 2c, lightness entry 1 sense 2a, saturation sense 4
Synonyms
- brilliance
- brilliancy
- candor
- dazzle
- effulgence
- illumination
- lambency
- lightness
- luminance
- luminosity
- luminousness
- luster
- lustre
- lustrousness
- radiance
- refulgence
- splendor
See all Synonyms & Antonyms 
Example Sentences
the brightness of the sunshine made me squint after an afternoon spent in a darkened movie theater
Recent Examples on the Web Like the power, the brightness levels are easily adjusted through a tap of the base. 
Sarah Toscano, Peoplemag, 13 Sep. 2022 In addition to a sleek design, the clock features three brightness levels, USB ports and an LED mirror display that can be used to apply makeup. Alyssa Gautieri, Good Housekeeping, 26 Aug. 2022 The only thing our tester would change is the brightness. Madison Yauger, Peoplemag, 30 Aug. 2022 The traditional chickpeas are still a part of the base, but the brightness from asparagus really elevate the flavors. Katlyn Moncada, Better Homes & Gardens, 22 Aug. 2022 While the brightness of the moon may make the shooting stars harder to see, the meteor rates this week are expected to be 95% better than all other nights this year, according to the American Meteor Society. Layla Mcmurtrie, Detroit Free Press, 11 Aug. 2022 The light setting is the perfect brightness for vegetable seedlings. Kelly Allen, House Beautiful, 8 Aug. 2022 This amplifies the brightness and lightness of the section while retaining the flattering, face-framing benefits of balayage. Lottie Winter, Glamour, 5 Aug. 2022 As such, the brightness of 2022 OE2 seems to line up with other asteroids around 1,200 feet across. Joshua Hawkins, BGR, 4 Aug. 2022 See More
Sarah Toscano, Peoplemag, 13 Sep. 2022 In addition to a sleek design, the clock features three brightness levels, USB ports and an LED mirror display that can be used to apply makeup. Alyssa Gautieri, Good Housekeeping, 26 Aug. 2022 The only thing our tester would change is the brightness. Madison Yauger, Peoplemag, 30 Aug. 2022 The traditional chickpeas are still a part of the base, but the brightness from asparagus really elevate the flavors. Katlyn Moncada, Better Homes & Gardens, 22 Aug. 2022 While the brightness of the moon may make the shooting stars harder to see, the meteor rates this week are expected to be 95% better than all other nights this year, according to the American Meteor Society. Layla Mcmurtrie, Detroit Free Press, 11 Aug. 2022 The light setting is the perfect brightness for vegetable seedlings. Kelly Allen, House Beautiful, 8 Aug. 2022 This amplifies the brightness and lightness of the section while retaining the flattering, face-framing benefits of balayage. Lottie Winter, Glamour, 5 Aug. 2022 As such, the brightness of 2022 OE2 seems to line up with other asteroids around 1,200 feet across. Joshua Hawkins, BGR, 4 Aug. 2022 See More Word History
First Known Use
before the 12th century, in the meaning defined at sense 1a
Medical Definition
brightness
noun
bright·ness ˈbrīt-nəs
: the one of the three psychological dimensions of color perception by which visual stimuli are ordered continuously from light to dark and which is correlated with light intensity compare hue, saturation sense 4a
brightness
noun
as in brilliancy
the quality or state of having or giving off light the brightness of the sunshine made me squint after an afternoon spent in a darkened movie theater Synonyms & Similar Words
Relevance
- brilliancy
- lightness
- brilliance
- illumination
- luminosity
- light
- luminance
- glow
- radiance
- glare
- luminousness
- effulgence
- luster
- splendor
- lustre
- refulgence
- dazzle
- glint
- flicker
- gleam
- candor
- luminescence
- lustrousness
- lambency
- fluorescence
- twinkle
- incandescence
- flame
- shininess
- sparkle
- blaze
- shimmer
- sheen
- flash
- flare
- glimmer
- shine
- fire
- gloss
- polish
- glitter
- scintillation
- burnish
- flash
- glisten
Antonyms & Near Antonyms
- darkness
- dark
- dullness
- blackness
- dimness
- dulness
- duskiness
- cloudiness
- somberness
- gloominess
- haziness
- obscurity
- murkiness
- paleness
- grayness
- colorlessness
- obscureness
- shadiness
- shadowiness
- lackluster