|v. t.||1.||To make bright or brighter; to make to shine; to increase the luster of; to give a brighter hue to.|
|2.||To make illustrious, or more distinguished; to add luster or splendor to.|
|3.||To improve or relieve by dispelling gloom or removing that which obscures and darkens; to shed light upon; to make cheerful; |
|4.||To make acute or witty; to enliven.|
|v. i.||1.||To grow bright, or more bright; to become less dark or gloomy; to clear up; to become bright or cheerful.|
|Verb||1.||brighten - make lighter or brighter; "The paint will brighten the room"|
darken - make dark or darker; "darken a room"
|2.||brighten - become clear; "The sky cleared after the storm"|
|3.||brighten - become brighter; "The sky brightened around noon"; "Her face brightened when she heard the good news"|
|4.||brighten - become brighter; "The sky brightened"|
darken - become dark or darker; "The sky darkened"