There were purple patches on his sunken, veined cheeks, his jowls were aquiver and his thin grey hair dishevelled; he had obviously run here.
He skipped breakfast next morning to scribble down a couple of made-up dreams for Divination, their first lesson, and was surprised to find a dishevelled Ron keeping him company.
’Me,’ said Ron, who was still rather dishevelled.
Fred, George and Ginny were ushered inside by Professor McGonagall, all three of them looking dishevelled and shocked, still in their night things.
When the final bell rang and they were heading back to Gryffindor Tower with their bags, Harry saw, with immense satisfaction, a dishevelled and sootblackened Umbridge tottering sweaty-faced from Professor Flitwick’s classroom.
There are no more uses of "disheveled" in the book.