1. past tense and past participle of dirty; made something unclean or contaminated

Examples

• She dirtied her white dress while gardening.
• The children dirtied their hands playing in the mud.
• Heavy rain dirtied the windows we had just cleaned.
• He dirtied his reputation with that scandal.
• The oil spill dirtied miles of coastline.
• Don’t walk through the house with those dirtied shoes.