1. to make or become black or dark in color
2. to damage someone’s reputation or character

Examples

• The fire blackened the walls of the building.
• Storm clouds blackened the sky.
• She blackened the fish in a cast iron skillet.
• The scandal blackened his reputation.
• Don’t let jealousy blacken your heart.
• The smoke blackened everything in the room.
• His enemies tried to blacken his name.