The term 'Discriminator Against the Elderly' can be summarized as a person who discriminates against elderly people. The crossword solution for this term is 'AGIST, ' which is defined as the practice of discriminating against the elderly. This type of discrimination is often seen in the workplace, where older employees may be passed over for promotions or given fewer opportunities than their younger counterparts. It can also be seen in other areas of life, such as housing and healthcare, where elderly people may be denied access to certain services or resources.