1. made or became brighter in light or color
Usage: past tense of brighten
2. made or became more cheerful or hopeful
Usage: past tense of brighten

Examples

• The room brightened when she opened the curtains.
• His face brightened when he saw his old friend.
• The sky brightened as the storm clouds moved away.
• Her mood brightened after receiving the good news.
• The teacher’s smile brightened the student’s day.
• The fresh paint brightened the entire hallway.