1. in a manner that is covered with or marked by dirt; in an unclean way
2. in a dishonest, unfair, or unethical manner

Examples

• The children came home dirtily after playing in the mud all afternoon.
• He dirtily accused his opponent of cheating without any evidence.
• The mechanic's hands were dirtily stained with grease and oil.
• She felt the competition had been won dirtily through bribery and corruption.
• The dog rolled dirtily in the dust, covering itself completely.
• The scandal revealed that the election had been conducted dirtily.