A martyr is someone who is willing to suffer or even die for their beliefs or cause. However, there are many synonyms for the word "martyr" that also describe similar traits. One such word is "saint," which suggests a person who exhibits great piety and selflessness. Another word is "zealot," which is someone who is passionate and dedicated to a particular cause. "Victim" is another synonym, but with a more negative connotation, suggesting someone who is often unfairly persecuted. "Sacrifice" is another word that implies giving up something important for the greater good. Ultimately, all of these synonyms reflect the deep commitment and devotion of those willing to make great personal sacrifices for a higher purpose.