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English definition of “bright”

bright

adjective  /brɑɪt/ us  

bright adjective (LIGHT)

[-er/-est only] full of light, or shining: the bright lights of downtown

bright adjective (COLOR)

[-er/-est only] strong in color: a bright green hat

bright adjective (INTELLIGENT)

[-er/-est only] (of a person) intelligent and quick to learn: He’s a bright, well-organized guy. She was full of bright ideas.

bright adjective (HAPPY)

full of hope or happiness: He has a bright future ahead of him.
brightness
noun [U]  /ˈbrɑɪt·nəs/ us  
The brightness of the summer day made him blink.
(Definition of bright from the Cambridge Academic Content Dictionary © Cambridge University Press)
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