disapproval If you describe something as a rehash, you are criticizing it because it repeats old ideas, facts, or themes, though some things have been changed to make it appear new. The Observer found the play `a feeble rehash of familiar Miller themes'
disapproval If you say that someone rehashes old ideas, facts, or accusations, you disapprove of the fact that they present them in a slightly different way so that they seem new or original. They've taken some of the best bits out of the best things and rehashed them