There are many synonyms that could be used to describe John Glenn, the American astronaut and politician who passed away in 2016. Some of these synonyms might include hero, patriot, icon, trailblazer, and legend. Glenn was known for his incredible bravery and accomplishments, including being the first American to orbit the earth and serving as a United States senator from Ohio. He was a strong advocate for science and education, and was a true inspiration to many Americans. Regardless of the words used to describe him, Glenn will always be remembered as a pioneering figure in American history.