1. covered with dirt, mud, dust, or other unwanted matter; not clean
2. morally corrupt or dishonest; unfair
3. relating to sex in an offensive way
Usage: informal

1. to make something dirty or unclean

Examples

• My shoes got dirty from walking through the mud.
• The children’s hands were dirty after playing outside.
• The politician was accused of dirty dealings with lobbyists.
• That was a dirty trick to play on your friend.
• Don’t dirty your clean clothes before the party.
• The rain will dirty the freshly washed car.
• She gave him a dirty look when he interrupted her.