Ruhr Rejections is a term used to describe the unemployed workers in the Ruhr Valley region of Germany during the 1920s and 1930s. The term 'Ruhr Rejections' was coined due to the high rate of unemployment in the area, with many workers being rejected from jobs due to the economic downturn. The term NEINS, which is a five-letter German word, is often used to describe the rejections. It translates to 'NO' or 'not' in English, and is used to signify the lack of job opportunities for the unemployed workers in the Ruhr Valley.