1. made or became white or whiter in color
Usage: past tense and past participle of ‘whiten’

Examples

• The dentist whitened her teeth with a special treatment.
• His hair had whitened with age.
• The sun whitened the old wooden fence over time.
• She whitened the walls with a fresh coat of paint.
• The bleach whitened the stained shirt.
• His face whitened when he heard the bad news.
• The snow whitened the entire landscape overnight.