brightening
nounUK /ˈbraɪtənɪŋ/
US /ˈbraɪtənɪŋ/
Brightening is when something gets lighter or brighter.
The brightening of the sky told us the sun was coming up.
RELATED WORDS
OTHER MEANINGS
2. A cream or product that makes skin look lighter or more even.
She uses a brightening cream on her face every morning.
3. The act of making something more cheerful or hopeful.
His kind words brought a brightening to her mood.
4. A substance added to laundry to make clothes look whiter.
The detergent has an optical brightening agent in it.