adjective
If you think his shirt was dirty, you should have seen his body!
His parents were shocked to hear him telling dirty jokes
It was a dirty trick of Sue's to tell the teacher
We're in for some dirty weather, Mr Christian, so you'd best reduce sail
She gave me a dirty look when I said anything about her sister
That villain has done his dirty work and now we must all suffer. He's nothing but a dirty coward!
verb
She refused to so much as dirty her hands to help us. Are you afraid it will dirty your reputation to be seen with me?
US