There are numerous synonyms for the phrase "stricken in years," which refers to someone who is elderly or aged. Some possible options include "advanced in age," "long in tooth," "senior," and "elderly." Other synonyms might include "long-lived," "mature," "seasoned," "venerable," or "hoary." Each of these phrases suggests someone who has lived a long and fulfilling life, and who has accumulated a wealth of wisdom and experience over the years. Whether used to describe a beloved grandparent, a cherished elder statesman, or simply someone who has lived a long and rich life, these synonyms evoke a sense of respect, admiration, and reverence for the passage of time.