1. becoming affected with or developing mildew
Usage: present participle of mildew
2. causing something to become affected with mildew
Usage: present participle of mildew

1. the process or result of becoming affected with mildew
Usage: gerund form

Examples

• The damp basement was mildewing the stored books.
• Old clothes left in the humid attic were slowly mildewing.
• The mildewing of the shower curtain required immediate cleaning.
• She noticed the bathroom walls were mildewing near the tub.
• The mildewing process accelerated in the warm, moist conditions.
• Regular ventilation prevents fabrics from mildewing.
• The gardener worried about his plants mildewing in the greenhouse.