Finally Harry tried getting angry again in the hope of provoking Ron into a defiant, and hopefully goal-saving, attitude, but this strategy did not appear to work any better than encouragement; Ron went to bed as dejected and hopeless as ever.
There are no more uses of "dejected" in the book.
Show samples from other sources
She is dejected but trying to look cheerful.
She is feeling dejected, but I think her world will look better after a good night’s sleep.