The phrase "advanced years" is often used to describe a person who is older, but there are many other synonyms that can be used to describe this stage of life. Some examples include "golden years," "senior years," "late years," "elderly age," and "mature age." Each of these phrases conveys the idea of someone who has reached a certain age and has experienced a variety of life experiences. Using these synonyms can add variety and depth to your writing and help you to more accurately convey the experiences and perspectives of older individuals.