1. present participle of smut; making dirty with soot or other dark matter
2. present participle of smut; affecting plants with smut disease (a fungal infection)
Usage: agricultural

Examples

• The chimney was smutting the white walls with black soot.
• Coal dust was smutting everything in the mining town.
• The fungus was smutting the corn crops throughout the region.
• Workers kept smutting their clothes in the factory.
• The disease was smutting the wheat fields badly this season.